Publications
| Title | Abstract | Year Filter | PMID(sorted descending) Filter |
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| landscapes with different biodiversity influence distribution of small mammals and their ectoparasitic chigger mites: a comparative study from southwest china. | from a previous field investigation in yunnan, southwest china between 2001 and 2015, we selected two types of landscapes to make a retrospectively comparative study on the distribution of small mammals and their ectoparasitic chigger mites. one landscape is "mountainous uncultivated land (mul)" with higher biodiversity, which is located in a famous "world nature heritage site", the three-parallel-rivers region in the northwest of yunnan. the other is "cultivated flatland landscape (cfl)" with l ... | 2018 | 29364908 |
| case report: family cluster of japanese spotted fever. | spotted fever group rickettsioses are transmitted by several types of arthropods (including ticks, chiggers, fleas, and lice) and are distributed worldwide. japanese spotted fever (jsf) was discovered as an emerging rickettsiosis in 1984. the annual number of cases has increased 3-fold during the last decade. in japan, jsf has been mainly reported in an area with warm climate that borders the pacific ocean. we describe a family/neighborhood cluster of three cases of jsf in an area of japan that ... | 2018 | 29363442 |
| tungiasis: a rare parasitic infestation in genitals of a native male from kathmandu. | tungiasis is a common parasitic infection inmany parts of the world, including south and central america and parts of africa. it is rare in other places, such as in india and pakistan and imported cases have been reported in taiwan, italy, the united states of america, etc. our diagnosis was made based on histopathologiocal features of the parasite, which corresponds too ther reports and description of tungiasis.1-3 it was treated by surgical excision alone. the fact that the disease has never b ... | 2018 | 29353907 |
| parasitic infections of the skin and subcutaneous tissues. | a variety of arthropods, protozoa, and helminths infect the skin and subcutaneous tissues and may be identified by anatomic pathologists in standard cytology and histology preparations. the specific organisms seen vary greatly with the patient's exposure history, including travel to or residence in endemic countries. arthropods are the most commonly encountered parasites in the skin and subcutaneous tissues and include sarcoptes scabei, demodex species, tunga penetrans, and myiasis-causing fly l ... | 2018 | 29351090 |
| scrub typhus outbreak in chonburi province, central thailand, 2013. | investigation of a scrub typhus outbreak in thailand during september 2013 found that 9.1% of thai soldiers and 11.1% of residents living in areas surrounding training sites had antibodies against the causative agent, orientia tsutsugamushi. sequence analysis of o. tsutsugamushi from rodents and chiggers identified 7 genogroups and 3 genotypes. | 2018 | 29350148 |
| molecular epidemiology of an orientia tsutsugamushi gene encoding a 56-kda type-specific antigen in chiggers, small mammals, and patients from the southwest region of korea. | a phylogenetic analysis of orientia tsutsugamushi was performed to elucidate its antigenic diversity in chiggers, small mammals, and patients. between september 2014 and december 2016, a total of 3,816 chiggers were identified within nine species of four genera in the southwest region of korea: leptotrombidium scutellare (49.9%; 1,907/3,816), leptotrombidium orientale (21.1%; 804/3,816), leptotrombidium pallidum (12.4%; 474/3,816), euchoengastia koreaensis (7.2%; 273/3,816), leptotrombidium palp ... | 2018 | 29313468 |
| tungiasis: a poorly-known diagnosis in europe. two paradigmatic cases from portugal. | tungiasis is a cutaneous parasitosis caused by infestation of the skin by gravid fleas of the genus tunga, mainly tunga penetrans. this flea is very common in tropical and subtropical regions of the globe, but not in europe. the infestation is acquired by walking barefoot or lying in places where the flea is present, usually beaches or sandy soils. we report two unrelated cases of imported tungiasis in portugal that presented to our clinic in the same week. we draw attention to one of the most c ... | 2017 | 29264904 |
| infestation by chiggers ( hannemania sp.) of miranda's white-lipped frog ( leptodactylus macrosternum) from a semiarid, neotropic region of brazil. | we identified miranda's white-lipped frog ( leptodactylus macrosternum) as a new host for chiggers ( hannemania sp.). a total of 57 larvae of hannemania sp. were found on 31 frogs examined from a semiarid region of northeastern brazil. | 2017 | 29261445 |
| chigger mite (acari: trombiculidae) survey of rodents in shandong province, northern china. | chigger mites are parasites of rodents and other vertebrates, invertebrates, and other arthropods, and are the only vectors of scrub typhus, in addition to other zoonoses. therefore, investigating their distribution, diversity, and seasonal abundance is important for public health. rodent surveillance was conducted at 6 districts in shandong province, northern china (114-112°e, 34-38°n), from january to december 2011. overall, 225/286 (78.7%) rodents captured were infested with chigger mites. a ... | 2017 | 29103271 |
| patterns of abundance and host specificity of bat ectoparasites in the central balkans. | bats are hosts to a number of ectoparasites-acarines (ticks, chiggers, other mites), bat flies, and fleas. bat ectoparasites might have significant ecological and public health importance as they may be potential vectors of zoonotic agents. it is important to identify their distribution, diversity, and host-parasite associations. bat ectoparasites in the central balkans have been largely understudied. the present research was conducted in 45 localities at the territory of bosnia and herzegovina, ... | 2018 | 29029286 |
| animal and human tungiasis-related knowledge and treatment practices among animal keeping households in bugiri district, south-eastern uganda. | zoonotic tungiasis caused by tunga penetrans remains a serious public and animal health problem among endemic villages in uganda and many sub saharan african countries. studies on human and animal tungiasis-related knowledge and treatment practices in endemic communities have never been undertaken, a limitation to development of sustainable control measures. | 2018 | 29017876 |
| prevalence, intensity and risk factors of tungiasis in kilifi county, kenya: i. results from a community-based study. | tungiasis is a neglected tropical disease caused by female sand fleas (tunga penetrans) embedded in the skin. the disease is associated with important morbidity. tungiasis is endemic along the coast of kenya with a prevalence ranging from 11% to 50% in school-age children. hitherto, studies on epidemiological characteristics of tungiasis in africa are scanty. | 2017 | 28991909 |
| new record of the scrub typhus vector, leptotrombidium rubellum, in southwest china. | there are several main vectors of scrub typhus in china, and leptotrombidium rubellum wang et liao, 1984 is one of them, which was previously considered to be restricted to the coastal regions of changle to xiamen, fujian province of east china. ecological investigation of chigger mites in recent years demonstrated the presence of l. rubellum also in yunnan province. chigger mites were collected from 34 counties, in which 127,460 larval mites were collected from 14,381 small mammal hosts. a tota ... | 2017 | 28981880 |
| prevalence and phylogenetic analysis of orientia tsutsugamushi in rodents and mites from central india. | orientia tsutsugamushi, the causative agent of scrub typhus in humans, is an obligate intracytosolic bacterium transmitted among animals and to humans by some species of larval trombiculid mites (chiggers) and is hosted mainly by rodents. in this study, we attempted detection of o. tsutsugamushi from blood and tissue samples of rodents trapped from different locations in central india using pcr targeting the 56 kda outer membrane protein gene and the 47 kda high temperature transmembrane protein ... | 2017 | 28934071 |
| secondary bacterial infections and antibiotic resistance among tungiasis patients in western, kenya. | tungiasis or jigger infestation is a parasitic disease caused by the female sand flea tunga penetrans. secondary infection of the lesions caused by this flea is common in endemic communities. this study sought to shed light on the bacterial pathogens causing secondary infections in tungiasis lesions and their susceptibility profiles to commonly prescribed antibiotics. participants were recruited with the help of community health workers. swabs were taken from lesions which showed signs of second ... | 2017 | 28886013 |
| epidemiology of tunga penetrans infestation in selected areas in kiharu constituency, murang'a county, kenya. | tungiasis is a parasitic skin disease brought about by female tunga penetrans when they burrow into the skin of their hosts. it is a disease that has largely been ignored. epidemiology of tungiasis has not been widely studied in kenya which could negatively affect effective intervention strategies. this study therefore sought to investigate epidemiology of tungiasis in selected areas in kiharu constituency, murang'a county in kenya. | 2015 | 28883944 |
| prevalence and intensity of fleas parasitizing an isolated population of screaming hairy armadillo in buenos aires province, argentina: host-related factors and temporal dynamics. | fleas (siphonaptera) of an isolated population of chaetophractus vellerosus (mammalia: xenarthra) from magdalena (buenos aires province) were studied, and their presence was associated with host-related factors (age, sex, weight, size, and physical condition) and temporal dynamics (seasonality and year). three species of fleas were identified: polygenis (polygenis) platensis (rhopalopsyllidae), tunga penetrans (tungidae), and pulex irritans (pulicidae). prevalences were significant for year, sea ... | 2017 | 28842764 |
| the prevalence and association with health-related quality of life of tungiasis and scabies in schoolchildren in southern ethiopia. | the prevalence of skin disease in low and middle income countries is high and communicable skin diseases are a significant public health problem. tungiasis is an ectoparasite infestation caused by the flea tunga penetrans, which has a widespread geographical distribution. tungiasis causes painful skin lesions and may affect activities of daily living. | 2017 | 28771469 |
| scrub typhus outbreak in a remote primary school, bhutan, 2014. | scrub typhus in bhutan was first reported in 2009. we investigated an outbreak of scrub typhus in a remote primary school during august-october 2014. delay in recognition and treatment resulted in 2 deaths from meningoencephalitis. scrub typhus warrants urgent public health interventions in bhutan. | 2017 | 28726604 |
| what's eating you? chiggers. | belonging to the trombiculidae family of mites, chigger specifically refers to the larval stage of the mite's life cycle when it is able to bite its host. although humans act as an accidental host, chiggers will latch on to the skin and their feeding process leads to localized inflammation and irritation. in most cases, these pruritic erythematous papules and papulovesicles are self-healing within a couple weeks, so only symptomatic relief is required as necessary by means of topical antipruriti ... | 2017 | 28686755 |
| high intensity of tunga penetrans infection causing severe disease among pigs in busoga, south eastern uganda. | towards the improvement of stakeholders' awareness of animal tungiasis, we report 10 unusual severe clinical cases of pig tungiasis which were associated with very high infection intensities of t. penetrans in an endemic area. | 2017 | 28662705 |
| an elisa assay using a combination of recombinant proteins from multiple strains of orientia tsutsugamushi offers an accurate diagnosis for scrub typhus. | scrub typhus (st) is a disease caused by an obligate intracellular bacterium, orientia tsutsugamushi, an organism that requires a bsl3 laboratory for propagation. the disease is hallmarked by an eschar at the site of the chigger bite, followed by the development of fever, malaise, myalgia, anorexia, and papulomacular rash. indirect immunofluorescent assay (ifa) is the gold standard for scrub typhus diagnosis, however, the subjectivity of the assay, the need for a specialized laboratory and instr ... | 2017 | 28601091 |
| abundance & distribution of trombiculid mites & orientia tsutsugamushi, the vectors & pathogen of scrub typhus in rodents & shrews collected from puducherry & tamil nadu, india. | human cases of scrub typhus are reported every year from puducherry and adjoining areas in southern india. however, information on the presence of causative agent, orientia tsutsugamushi, and its vectors is lacking. hence, the objective of the study was to find out the vector as well as pathogen distribution in rodents and shrews present in the scrub typhus-reported areas in southern india. | 2016 | 28474626 |
| detection of a novel rickettsia from leptotrombidium scutellare mites (acari: trombiculidae) from shandong of china. | leptotrombidium scutellare mites, the vector of orientia tsutsugamushi, have rarely been reported to associate with rickettsia species. three hundred nineteen chiggers were collected from the ears of 32 rodents captured in huangdao district of qingdao city, china, in october 2015. the chigger samples were tested for rickettsia, severe fever with thrombocytopenia syndrome virus, and hantavirus by pcr or rt-pcr amplification. all mites were classified morphologically and molecularly as l. scutella ... | 2017 | 28399204 |
| canine tungiasis: high prevalence in a tourist region in bahia state, brazil. | tungiasis is a parasitic skin disease neglected by authorities, health professionals, and the general population. its occurrence is significantly associated with poverty. a cross-sectional study was conducted to describe the prevalence of tungiasis, associated clinical signs and risk factors of the canine population at a tourist site in the city of ilhéus, bahia (northeast brazil). all village households were visited and dogs inspected after authorization by owners. a semi-structured questionnai ... | 2017 | 28364835 |
| [studies on population of the bank vole (clethrionomys glareolus schreber, 1780) by mark and release trapping in lower austria]. | 1. bionomical and ecological investigations on bank voles were carried out by mark and release trapping in two phytosociologically different areas in lower austria from 1963 until 1966. 2. the number of trappings and retrappings depends on the intensity of captures: 3 consecutive trapping nights in fourtnightly intervals appeared to be most favourable. 3. the life time of bank voles was determined as 3.1 and respectively 3.6 months in the two localities investigated. only very few specimens reac ... | 1968 | 28306854 |
| severe tungiasis in western tanzania: case series. | tungiasis is caused by infestation with the sand flea (tunga penetrans). this ectoparasitosis is endemic in economically depressed communities in south american and african countries. however, data on the epidemiology of tungiasis in tanzania are very limited and the disease does not receive much attention from health care professionals. during a community cross sectional survey in northwest tanzania, we identified five individuals extremely infested with high number of parasites. a total of 435 ... | 2011 | 28299062 |
| treatment of tungiasis with a two-component dimeticone: a comparison between moistening the whole foot and directly targeting the embedded sand fleas. | tungiasis (sand flea disease) is caused by the penetration of female sand fleas (tunga penetrans, siphonaptera) into the skin. it belongs to the neglected tropical diseases and is prevalent in south america, the caribbean and sub-saharan africa. tungiasis predominantly affects marginalized populations and resource-poor communities in both urban and rural areas. in the endemic areas, patients do not have access to an effective and safe treatment. a proof-of-principle study in rural kenya has show ... | 0 | 28293130 |
| [study of epidemic area on tsutsugamushi disease in taizhou from 2013 to 2014]. | objective: to study the epidemiological characteristics of tsutsugamushi disease, and to confirm the existence of the disease's epidemic foci in taizhou. methods: from 2013 to 2014, dongxing town hospital and xingqiao town hospital were selected as specimen collection sites in jingjiang city. blood samples (5 ml) were collected from 40 patients with acute tsutsugamushi disease. a total of 59 rodents were captured with cage night method in the survey sites at 5, 7, 9, 10, and 11 months in 2013, f ... | 2017 | 28260341 |
| trombiculiasis in domestic goats and humans in the state of maranhão, brazil. | trombiculiasis is an infestation caused by larval mites (chiggers) of the family trombiculidae. here, we provide the first report on parasitism by the chigger species eutrombicula alfreddugesi (oudemans) and eutrombicula batatas (linnaeus) in goats and humans on farms in the state of maranhão, northeastern brazil. severe itching and dermatitis caused by the chiggers' bites were seen. from a total of 779 examined goats, 214 of them showed clinical signs of infestation, as well as family members o ... | 2017 | 28146153 |
| description of blankaartia shatrovi n. sp. (acari: trombiculidae) from brazil. | the chigger mite genus blankaartia includes 28 known species, of which 10 are distributed in the nearctic and neotropical regions. these species preferentially parasitize birds, but occasionally they can also be found on rodents, bats, and reptiles, showing low host selectivity. in the present study, we report the presence of this genus in brazil for the first time, including the first report of blankaartia sinnamaryi (floch and fauran) and the description of a new species of blankaartia collect ... | 2017 | 28082634 |
| disseminated tungiasis in a 78-year-old woman from tanzania: a case report. | tungiasis is one of the neglected tropical diseases; it affects up to 40% of individuals living in societies with poor housing and sanitation standards. in endemic areas, tunga infestation, which predominantly affects the periungual areas of the lower limbs in humans, is associated with considerable morbidity and poor quality of life. | 2016 | 27998311 |
| ectoparasites of the black-chinned siskin spinus barbatus (passeriformes: fringillidae) in chile. | despite being a bird with a broad and extensive distribution in chile, the black-chinned siskin, spinus barbatus molina, 1782 is not well studied in relation to its parasites. this paper aims to describe the ectoparasite fauna of s. barbatus in central and southern chile. a total of 125 individuals caught with mist nets were examined alive; a total of 22 parasites were found dead and were exposed to parasit autopsy. the extracted parasites were preserved in 70% alcohol for subsequent mounting an ... | 2016 | 27982296 |
| prevalence and risk factors associated with tungiasis in mayuge district, eastern uganda. | tungiasis is an endemic but neglected health problem in uganda especially in resource poor communities. it is largely affecting rural communities in the eastern, west nile and central regions. this study assessed prevalence and risk factors associated with tungiasis in mayuge district, eastern uganda. | 2016 | 27642416 |
| seroepidemiology of rickettsial infections in northeast india. | resurgence of scrub typhus was reported in northeast india in 2010 after a gap of 67 years since world war ii. however, the presence of other rickettsial infections remained unknown from this region. a seroepidemiological investigation was undertaken in the scrub typhus affected areas from 2013-2015 in assam, arunachal pradesh and nagaland to assess the exposure to other rickettsial diseases besides scrub typhus. | 2016 | 27618917 |
| seroepidemiological survey of zoonotic diseases in small mammals with pcr detection of orientia tsutsugamushi in chiggers, gwangju, korea. | serosurveillance for zoonotic diseases in small mammals and detection of chiggers, the vector of orientia tsutsugamushi, were conducted from september 2014 to august 2015 in gwangju metropolitan area. apodemus agrarius was the most commonly collected small mammals (158; 91.8%), followed by myodes regulus (8; 4.6%), and crocidura lasiura (6; 3.5%). the highest seroprevalence of small mammals for o. tsutsugamushi (41; 26.3%) was followed by hantaviruses (24; 15.4%), rickettsia spp. (22; 14.1%), an ... | 2016 | 27417085 |
| acute pancreatitis associated with scrub typhus. | scrub typhus, or tsutsugamushi fever, is a zoonosis of rural asia and the western pacific islands. the causative organism, orientia (formerly rickettsia) tsutsugamushi, is transmitted to humans by the bite of a larval leptotrombidium mite (chigger). scrub typhus may have gastrointestinal presentations, such as acute acalculous cholecystitis, duodenal ulcer perforation, peritonitis and gastric ulceration. acute pancreatitis with scrub typhus has been reported rarely. we report a patient of scrub ... | 2017 | 27411365 |
| scrub typhus, a case report : military and regional significance. | 2004 | 27407591 | |
| prevalence and clinical aspects of tungiasis in south-west nigerian schoolchildren. | tungiasis is highly prevalent in resource-poor communities in sub-saharan africa, but studies among schoolchildren are scanty. we assessed prevalence, parasite load and clinical aspects of tungiasis in schoolchildren in south-western nigeria. a total of 545 schoolchildren was examined. of these, 133 (24.4%; 95% ci, 20.9-28.2%) were infested with tunga penetrans boys showed a higher prevalence than girls (31% versus 18%, p < 0.0001); in those infested, the median number of lesions was two, with n ... | 2017 | 27402650 |
| two new species and new records of chiggers (acari: leeuwenhoekiidae, <br />trombiculidae) from birds in vietnam. | a total of 12 chigger species (acariformes: trombiculidae) occurred on 7 bird species in vietnam. two new species, namely neoschoengastia vietnamensis sp. nov. and hypogastia stekolnikovi sp. nov. are described, figured and compared with similar species placed in relevant genera using differential diagnoses of related species. figures and diagnosis of leptotrombidium taiyuanense tian and wen, 1984 are added. odontacarus audy (radford, 1946), leptotrombidium allosetum wang, liao and lin, 1981, l. ... | 2016 | 27395515 |
| a new genus and species of chigger mite (trombidiformes: trombiculidae) from loxodontomys pikumche (rodentia: cricetidae) in chile. | the family trombiculidae is one of the most diverse and cosmopolitan (walter et al. 2009). in chile, the family trombiculidae is represented by six genera associated with reptiles: eutrombicula ewing; microtrombicula ewing; paratrombicula goff & whitaker; whartonacarus (brennan & jones); diaguitacarus stekolnikov & gonzález-acuña and proschoengastia vercammen-grandjean and two genera associated with rodents chilacarus webb, bennett & loomis and poliremotus brennan & goff (stekolnikov & gonzález- ... | 2016 | 27394465 |
| species abundance distribution of ectoparasites on norway rats (rattus norvegicus) from a localized area in southwest china. | the species of ectoparasites that live on a specific host in a geographical region form an ectoparasite community. species abundance distributions describe the number of individuals observed for each different species that is encountered within a community. based on properties of the species abundance distribution, the expected total number of species present in the community can be estimated. | 2016 | 27308277 |
| comparison of parasitic mite retrieval methods in a population of community cats. | objectives this study compared methods of mite retrieval from community cats in the ohio river valley region of the usa and determined incidence of parasitic mites in this region. methods in total, 493 community cats were humanely trapped and anesthetized for a trap-neuter-return program. cats received a dermatologic examination, ear swabs, superficial skin scraping, flea combing, acetate tape preparation and feces collection. all samples were examined microscopically. large volumes of hair and ... | 2017 | 27259538 |
| species diversity of ectoparasitic chigger mites (acari: prostigmata) on small mammals in yunnan province, china. | chigger mites are a large group of arthropods and the larvae of mites are ectoparasites. some species of ectoparasitic mites (larvae) can be the transmitting vectors of tsutsugamushi disease (scrub typhus). yunnan province is located in the southwest of china with complicated topographic landform and high biodiversity, where there are five zoogeographical subregions. rodents and some other small mammals were trapped and examined for ectoparasitic chigger mites in 29 investigation sites in yunnan ... | 2016 | 27212464 |
| subungual hyperpigmented nodular lesion in an adult's toe. | 2016 | 27171976 | |
| chigger mites of the genus ericotrombidium (acariformes: trombiculidae) attacking pets in europe. | diversity of chigger mites causing trombiculiasis of domestic animals and humans in europe is greatly underestimated. a number of reports on the attacks of "harvest mite" (neotrombicula autumnalis) could be based on misidentified chiggers from other species and genera. in this study descriptions of two cases of trombiculiasis are presented, which constitute the first report on the pets' parasitism by the chigger genus ericotrombidium in europe. the species ericotrombidium ibericense is for the f ... | 2016 | 27084473 |
| [ecological and geographic analysis of the spread of mites of the family trombiculidae in mongolia]. | the paper gives data on the fauna of chigger mites (thrombiculinae), the ectoparasites of small mammals in mongolia. the ecological and geographic analysis could reveal the major abiotic and biotic determinants of the spread of the chigger mites and make a map of their potential area. | 2016 | 27029147 |
| two severe cases of tungiasis in goat kids in uganda. | tungiasis ensues from the penetration and burrowing of female sand fleas (tunga spp.; siphonaptera: tungidae) in the skin of mammals. there are few case reports of severe tungiasis in goats and in these cases the tunga species were not in most cases clearly identified. two cases of severe tungiasis caused by tunga penetrans in goat kids from tungiasis-endemic rural uganda are reported. these are the first severe cases of tungiasis in goats reported from outside south america. | 2016 | 27012871 |
| tungiasis in italy: an imported case of tunga penetrans and review of the literature. | tungiasis is an animal and human parasitic disease caused by fleas of the genus tunga (siphonaptera, tungidae), endemic in equatorial and subtropical regions and rarely described in european countries, where clinicians and general pathologists could be not aware of this parasitic disease. to our knowledge, only 75 cases of human tungiasis (not all described in detail) were previously reported in italy. we described a new case in a 34-year-old italian flight attendant who developed a granuloma-li ... | 2016 | 26876782 |
| an updated distribution and hosts: trombiculid mites (acari: trombidiformes) associated with small mammals in yunnan province, southwest china. | trombiculid mites (or chigger mites) are a large group of arthropods, and some of these species are vectors of orientia tsutsugamushi, the causative agent of tsutsugamushi disease (scrub typhus). yunnan province is situated in the southwest of china, and its complicated topography, special altitude gradients, and high biodiversity have aroused the interest of many scientists to study the fauna and species diversity of plants and animals. to replenish our former faunal study, this paper listed al ... | 2016 | 26833324 |
| evidence for interspecific interactions in the ectoparasite infracommunity of a wild mammal. | co-infection with multiple parasite species is commonly observed in nature and interspecific interactions are likely to occur in parasite infracommunities. such interactions may affect the distribution of parasites among hosts but also the response of infracommunities to perturbations. however, the response of infracommunities to perturbations has not been well studied experimentally for ectoparasite communities of small mammal hosts. | 2016 | 26830510 |
| host-parasite association in trombiculid mites (actinotrichida: trombiculidae) of temperate zone - the case of hirsutiella zachvatkini (schluger, 1948); are we dealing with prolonged contact with the host? | the time-extended contact of trombiculid larvae with hosts poses a question of its ecological determinants. the phenomenon, which may facilitate the overwintering of larvae in the temperate zone, was previously observed in few parasitengone taxa, but not confirmed for mammal-associated trombiculids. the study aims at tracing the phenology of larvae of hirsutiella zachvatkini and at verifying the hypothesis of contact with the host, extending beyond the parasitic phase. | 2016 | 26830356 |
| tungiasis-associated morbidity in pigs and dogs in endemic villages of uganda. | tunga penetrans (insecta, siphonaptera, tungidae) causes severe morbidity among heavily infected humans and animals in latin america and sub-saharan africa. the clinical pathology of tungiasis in animals has never been studied systematically. | 2016 | 26817587 |
| a revised checklist of chigger mites (acari: trombiculidae) from thailand, with the description of three new species. | chigger mites of thailand were studied on the basis of larvae collected from 19 small mammal species (17 species of rodentia, 1 species of erinaceomorpha, and 1 species of scandentia) and revision of published data. samples of 38 trombiculid species were collected from 11 provinces. three new species were described: trombiculindus kosapani sp. nov., helenicula naresuani sp. nov., and walchia chavali sp. nov. ten species were recorded in thailand for the first time: leptotrombidium sialkotense ve ... | 2016 | 26744466 |
| geographical distribution and seasonal indices of chigger mites on small mammals collected on the east coast of the republic of korea. | the geographical distributions and relative population densities of scrub typhus vector mites collected from small mammals were determined for 5 locations on the east coast of the republic of korea. collection sites included goseong, gangneung, and hoengseong in gangwon province and uljin and yeongdeok in gyeongbuk province. a total of 275 small mammals including members of rodentia (rodents) and soricomorpha (shrews, such as crocidura lasiura ) belonging to 4 genera and 4 species were captured ... | 2016 | 26653927 |
| surveillance of potential hosts and vectors of scrub typhus in taiwan. | scrub typhus is a lethal infectious disease vectored by larval trombiculid mites (i.e. chiggers) infected with orientia tsutsugamushi (ot) and recent decades have witnessed an emergence of scrub typhus in several countries. identification of chigger species and their vertebrate hosts is fundamental for the assessment of human risks to scrub typhus under environmental changes, but intensive and extensive survey of chiggers and their hosts is still lacking in taiwan. | 2015 | 26626287 |
| animal reservoirs of zoonotic tungiasis in endemic rural villages of uganda. | animal tungiasis is believed to increase the prevalence and parasite burden in humans. animal reservoirs of tunga penetrans differ among endemic areas and their role in the epidemiology of tungiasis had never been investigated in uganda. | 2015 | 26473360 |
| ectoparasitic chigger mites on large oriental vole (eothenomys miletus) across southwest, china. | an investigation of chigger mites on the large oriental vole, eothenomys miletus (rodentia: cricetidae), was conducted between 2001 and 2013 at 39 localities across southwest china, and 2463 individuals of the vole hosts were captured and examined, which is a big host sample size. from the body surface of e. miletus, 49,850 individuals of chigger mites were collected, and they were identified as comprising 175 species, 13 genera, and 3 subfamilies in 2 families (trombiculidae and leeuwenhoekiida ... | 2016 | 26468149 |
| [two travellers returning from the tropics with persistent wounds on their feet]. | two young tropical medicine residents returned from zanzibar with multiple aching wounds on their toes that did not heal within 6 weeks. the clinical picture fit 'tungiasis', which is caused by tunga penetrans, also known as jigger or sandflea. the ectoparasites were surgically removed and the status of tetanus vaccination was checked. | 2015 | 26443117 |
| a checklist of chigger mites (acari: trombiculidae and leeuwenhökiidae) from taiwan, with descriptions of three new species. | scrub typhus is a lethal human disease transmitted by larval trombiculid mites (i.e., chiggers) that have been infected with the rickettsia orientia tsutsugamushi. in total, 21 chigger species are known from taiwan. we update the checklist of chiggers of taiwan based on an intensive survey of shrew and rodent hosts in grasslands and agricultural fields in lowland taiwan, coupled with surveys of forests in one mountainous site and an opportunistic examination of submitted host specimens. three ne ... | 2015 | 26438572 |
| development of an orientia tsutsugamushi lc-1 murine intraperitoneal challenge model for scrub typhus: determination of murine lethal dose (muld50), tissue bacterial loads, and clinical outcomes. | currently, no vaccine has been developed to protect humans from naturally acquired heterologous orientia tsutsugamushi infections. to enhance the validity of vaccine candidates, we are developing a murine chigger challenge model with the o. tsutsugamushi lc-1-infected leptotrombidium chiangraiensis line-1. to this end, an intraperitoneal (i.p.) murine challenge model using an o. tsutsugamushi lc-1 isolate was developed for eventual validation of the chigger challenge model. we have determined th ... | 2015 | 26378973 |
| genotype diversity and distribution of orientia tsutsugamushi in scrub typhus patients and rodents in shandong, northern china. | orientia tsutsugamushi, the etiologic agent of scrub typhus, is transmitted to humans through the bites of infected chiggers. to identify the genotypes of o.tsutsugamushi and their geographical distribution in shandong, 236 patient's samples and 1606 captured rodents were collected in major-endemic regions of shandong province from june 2013 to december 2014. sequences were determined for the 56-kda tsa gene, and the relationship between these sequences and those previously determined was assess ... | 2015 | 26371067 |
| analysis of ectoparasites (chigger mites, gamasid mites, fleas and sucking lice) of the yunnan red-backed vole (eothenomys miletus) sampled throughout its range in southwest china. | the yunnan red-backed vole eothenomys miletus (rodentia: cricetidae) is an endemic rodent species and reservoir host of zoonoses in southwest china. based on a large host sample (2463 voles collected from 39 localities between 2001 and 2013), a general analysis of four categories of ectoparasite (fleas, sucking lice, chigger mites and gamasid mites) on e. miletus across its entire range of distribution was made. this analysis identified a total of 71 895 ectoparasites belonging to 320 species (3 ... | 2015 | 26345365 |
| host-seeking behavior of trombiculid mites on vegetation in relation to sika deer. | we collected larval trombiculid mites on vegetation monthly from october 1997 to february 2000, and from the heads of sika deer culled in march 2003 in boso peninsula, central japan. two species of trombiculid mites, neotrombicula nogamii takahashi, takano, misumi, and kikuchi and leptotrombidium scutellare nagayo, miyagawa, mitamura, and tamiya, occurred on vegetation. peak numbers of n. nogamii were found in january, and l. scutellare numbers peaked in november. both species were collected pre ... | 2015 | 26336314 |
| sylvatic infestation of oklahoma reptiles with immature ixodes scapularis (acari: ixodidae). | reptiles were collected in nine counties in oklahoma from september 2002 to may 2004 and examined for ixodes scapularis (say) larvae and nymphs to determine seasonal incidence and prevalence of these ticks. in total, 209 reptile specimens consisting of nine species of lizards and seven species of snakes were collected. plestiodon fasciatus (l.) was the most numerous species collected (55%) followed by sceloporus undulatus (latreille) (17%) and scincella lateralis (say) (11%). less than 10 indivi ... | 2015 | 26336240 |
| origin and higher-level diversification of acariform mites - evidence from nuclear ribosomal genes, extensive taxon sampling, and secondary structure alignment. | acariformes is the most species-rich and morphologically diverse radiation of chelicerate arthropods, known from the oldest terrestrial ecosystems. it is also a key lineage in understanding the evolution of this group, with the most vexing question whether mites, or acari (parasitiformes and acariformes) is monophyletic. previous molecular studies recovered acari either as monophyletic or non-monophyletic, albeit with a limited taxon sampling. similarly, relationships between basal acariform gro ... | 2015 | 26330076 |
| infracommunity dynamics of chiggers (trombiculidae) parasitic on a rodent. | we studied the structure of chigger mite (trombiculidae) communities parasitic on a south african rodent, rhabdomys pumilio. we aimed to determine whether: (a) different chigger species differ in preferences for certain body areas of a host and (b) chigger assemblages among body areas of the same host individual, are structured and if so, whether the structure of these assemblages is aggregative or segregative. rhabdomys pumilio is parasitized by seven chigger species belonging to six genera. th ... | 2015 | 26303191 |
| a review of chilean chiggers (acari: trombiculidae), with the description of a new genus and ten new species. | a new genus and species of chigger mites, diaguitacarus choapensis gen. et sp. nov., is described from four lizard species of the genus liolaemus in choapa province of chile. eight new chigger species are described from lizards of the genera liolaemus, phymaturus (squamata: liolaemidae), and microlophus (squamata: tropiduridae), in arica and parinacota, atacama, coquimbo, valparaíso, and biobío regions: eutrombicula nerudai sp. nov., eutrombicula mistrali sp. nov., eutrombicula picunche sp. nov. ... | 2015 | 26249418 |
| ectoparasite burdens of the damaraland mole-rat (fukomys damarensis) from southern africa. | damaraland mole-rats (fukomys damarensis) of the family bathyergidae are widely distributed subterranean rodents in sub-saharan africa. no parasites have ever been reported for this species and only 1 ectoparasite is described for the entire genus. in the current study ectoparasites were collected from individuals captured at 3 localities in south africa and namibia to document the ectoparasite community of f. damarensis, investigate their aggregation patterns, and evaluate the influence of seas ... | 2015 | 26249137 |
| long-lasting permethrin-impregnated clothing protects against mosquito bites in outdoor workers. | outdoor exposure to mosquitoes is a risk factor for many diseases, including malaria and dengue. we have previously shown that long-lasting permethrin-impregnated clothing protects against tick and chigger bites in a double-blind randomized controlled trial in north carolina outdoor workers. here, we evaluated whether this clothing is protective against mosquito bites by measuring changes in antibody titers to mosquito salivary gland extracts. on average, there was a 10-fold increase in titer du ... | 2015 | 26195460 |
| scrub typhus with acute respiratory distress syndrome (ards) and its management in intensive care unit: a case report. | scrub typhus is zoonotic disease caused by orientia tsutsugamushi (o tsutsugamushi). it is transmitted to humans by the bite of trombiculid mite larvae (chiggers). it is a re-emerging infectious disease in india. clinical manifestations include fever, headache, anorexia, myalgia, eschar, adenopathy and maculopapular rash. complications of scrub typhus develop after first week of illness. complications include meningoencephalitis, jaundice, myocarditis, ards and renal failure. eschar and rash may ... | 2015 | 26155511 |
| 18f-fdg pet/ct findings of scrub typhus. | scrub typhus is an acute infectious disease caused by orienta tsutsugamushi, which is clinically manifested by fever, generalized lymphadenopathy, diffuse myalgia, headache, maculopapular rash, and eschars at the site of chigger feedings. diagnosis of scrub typhus requires compatible clinical features, history of exposure, and result of selorogic testing. in recent years, f-fdg pet/ct is seen as having increasing potential for use in examination and management of patients with infectious or infl ... | 2015 | 26098289 |
| leptotrombidium (acari: trombiculidae) of the world. | the chigger mite genus leptotrombidium nagayo, miyagawa, mitamura and imamura, 1916 is reviewed using literature data. for 340 larval species brief diagnoses, synonymy, data on type hosts and type localities are provided. the genus is divided into species-groups based on morphological evidence enabling easier establishment of group-membership of un-known specimens in the future. some species groups are supported by a hierarchical cluster analysis with multiscale boot-strap resampling applied to ... | 2013 | 26079025 |
| possible potassium chlorate nephrotoxicity associated with chronic matchstick ingestion. | we present a case of a 48-year-old active duty male soldier with a history of chronic exposure to potassium chlorate, later diagnosed with chronic interstitial nephritis. he reported regular matchstick consumption to prevent chigger (trombicula autumnalis) bites, amounting to ∼5.8 g of potassium chlorate over 3 years. potassium chlorate can cause anuric renal failure within days of a toxic dose. its slow excretion and mechanism of action suggest that renal toxicity may result from lower-dose chr ... | 2013 | 26064493 |
| host-associated differences in morphometric traits of parasitic larvae hirsutiella zachvatkini (actinotrichida: trombiculidae). | examination of host-associated variation in the chigger mite hirsutiella zachvatkini (schluger) revealed morphological differences among larvae infesting sympatric hosts: apodemus agrarius, apodemus flavicollis and myodes glareolus. the analysis included 61 variables of larvae obtained from their gnathosoma, idiosoma and legs (measurements and counts). statistically significant differences were observed for metric characters of the legs as opposed to the scutum. in view of the conspecificity of ... | 2015 | 26002309 |
| urbanization of scrub typhus disease in south korea. | scrub typhus is an endemic disease in asia. it has been a rural disease, but indigenous urban cases have been observed in seoul, south korea. urban scrub typhus may have a significant impact because of the large population. | 2015 | 26000454 |
| neglected bacterial zoonoses. | bacterial zoonoses comprise a group of diseases in humans or animals acquired by direct contact with or by oral consumption of contaminated animal materials, or via arthropod vectors. among neglected infections, bacterial zoonoses are among the most neglected given emerging data on incidence and prevalence as causes of acute febrile illness, even in areas where recognized neglected tropical diseases occur frequently. although many other bacterial infections could also be considered in this negle ... | 2015 | 25964152 |
| faunal analysis of chigger mites (acari: prostigmata) on small mammals in yunnan province, southwest china. | this paper studied the species diversity and fauna distribution of chigger mites on small mammals in yunnan province, southwest yunnan. in total, 120,138 individuals of chigger mites were collected from 13,760 individual small mammals, and these mites were identified as comprising two families, 26 genera, and 274 species. of the five zoogeographical subregions, the mite species diversity in subregions i and ii was higher than that in subregions iii, iv, and v. four mite species (leptotrombidium ... | 2015 | 25930112 |
| ectoparasites of murids in peninsular malaysia and their associated diseases. | a considerable number of rat-borne ectoparasite studies have been conducted since the early 1930s in the malayan peninsula (now known as peninsular malaysia). the majority of studies were field surveys and collections of specimens across the region, and were conducted primarily to catalogue the ectoparasite host distribution and discover novel species. this has generated a signification amount of information, particularly on the diversity and host distribution; other aspects such as morphology, ... | 2015 | 25924677 |
| histopathology and risk factors associated with neotrombicula microti infestation in the endangered amargosa vole (microtus californicus scirpensis). | the amargosa vole (microtus californicus scirpensis) is a profoundly endangered rodent found only in the central mojave desert, inyo county, california, us. in 2010, severe cases of trombiculiasis, caused by larval neotrombicula microti mites, were discovered among voles and sympatric small mammals. we evaluated amargosa voles and sympatric rodents for infestation with n. microti december 2011-november 2012 and evaluated histopathology of ear tissue from 13 actively n. microti-infested amargosa ... | 2015 | 25919470 |
| correction: characterization of tunga penetrans antigens in selected epidemic areas in murang'a county in kenya. | 2015 | 25860805 | |
| ectoparasites of the critically endangered insular cavy, cavia intermedia (rodentia: caviidae), southern brazil. | cavia intermedia is a rodent species critically endangered and is found only on a 10 hectare island off the southern brazilian coast. to identify the ectoparasites of c. intermedia, 27 specimens (14 males and 13 females), representing approximately 65% of the estimated total population, were captured and examined. a total of 1336 chewing lice of two species were collected: gliricola lindolphoi (amblycera: gyropidae) and trimenopon hispidum (amblycera: trimenoponidae). in addition, chiggers ariso ... | 2015 | 25830106 |
| fire and parasites: an under-recognized form of anthropogenic land use change and mechanism of disease exposure. | anthropogenic land use changes have altered ecosystems and exacerbated the spread of infectious diseases. recent reviews, however, have revealed that fire suppression in fire-prone natural areas has not been recognized as a form of anthropogenic land use change. furthermore, fire suppression has been an under-recognized mechanism altering the risk and transmission of infectious disease pathogens and host-parasite dynamics. however, as settlement patterns changed, especially due to colonial expan ... | 2015 | 25805161 |
| characterization of tunga penetrans antigens in selected epidemic areas in murang'a county in kenya. | tunga penetrans are fleas that cause tungiasis, a condition characterized by high transmission rate due to poor housing conditions, social neglect and inadequate health care in economically disadvantaged communities in developing countries. this study therefore aimed at characterizing jiggers antigens to identify immunodominant ones to help understand immunological behavior of the parasite that would otherwise be important in future control of the parasite. samples were gravid fleas and blood sa ... | 2015 | 25793704 |
| a new species of tunga perforating the osteoderms of its armadillo host in argentina and redescription of the male of tunga terasma. | a new species of tunga (siphonaptera: tungidae) collected from armadillos in argentina is described. the new species is characterized by large and pigmented eyes, the presence of two bristles on antennal segment ii, two bristles at the base of the maxilla, and a discoid neosome compressed anteroposteriorly. the gravid female is located in the carapace of the host, perforating the osteoderms. the new species resembles tunga penetrans and tunga terasma in general appearance. however, it differs by ... | 2015 | 25630228 |
| bartonella species and trombiculid mites of rats from the mekong delta of vietnam. | a survey of bartonella spp. from 275 rats purchased in food markets (n=150) and trapped in different ecosystems (rice field, forest, and animal farms) (n=125) was carried out during october, 2012-march, 2013, in the mekong delta of vietnam. the overall bartonella spp. prevalence detected by culture and pcr in blood was 14.9% (10.7-19.1%), the highest corresponding to rattus tanezumi (49.2%), followed by rattus norvegicus (20.7%). trapped rats were also investigated for the presence and type of c ... | 2015 | 25629779 |
| dermatoses associated with mites other than sarcoptes. | mites are arthropods of the subclass acari (acarina). although sarcoptes is the mite most commonly recognized as a cause of human skin disease in the united states, numerous other mite-associated dermatoses have been described, and merit familiarity on the part of physicians treating skin disease. this review discusses several non-scabies mites and their associated diseases, including demodex, chiggers, cheyletiella, bird mites, grain itch, oak leaf itch, grocer's itch, tropical rat mite, snake ... | 2014 | 25577848 |
| metabolic responses to orientia tsutsugamushi infection in a mouse model. | tsutsugamushi disease is an infectious disease transmitted to humans through the bite of the orientia tsutsugamushi-infected chigger mite; however, host-pathogen interactions and the precise mechanisms of damage in o. tsutsugamushi infections have not been fully elucidated. here, we analyzed the global metabolic effects of o. tsutsugamushi infection on the host using 1h-nmr and uplc-q-tof mass spectroscopy coupled with multivariate statistical analysis. in addition, the effect of o. tsutsugamush ... | 2015 | 25569562 |
| seroprevalence of scrub typhus at a tertiary care hospital in andhra pradesh. | scrub typhus is a rickettsial infection which is caused by orientia tsutsugamushi and transmitted by the bite of the chigger of a mite. delay in diagnosis can be fatal otherwise the treatment is simple, doxycycline being the drug of choice. indirect immunoflurescence is considered gold standard but it is not used in india as it is costly and also not available. there is need for rapid, economic and simple test for the diagnosis of scrub typhus. this study was taken up to study the seroprevalence ... | 2015 | 25560004 |
| pathology and diagnosis of proliferative and ulcerative dermatitis associated with tunga penetrans infestation in cattle. | tunga penetrans is the smallest biting flea known. in cattle, infestation by t. penetrans (tungiasis) typically affects the skin of the distal legs, udder, prepuce, and perianal area. a detailed clinical and pathologic description of bovine tungiasis, together with electron microscopy and molecular diagnostics to establish the identity of the parasite are described. ninety percent of the cows and heifers and 80% of the bulls in a herd in northwest argentina had proliferative and ulcerative skin ... | 2015 | 25525141 |
| photo quiz: risk in travelers after barefoot sand walking in tropical countries. tunga penetrans. | 2015 | 25524764 | |
| coincidence between geographical distribution of leptotrombidium scutellare and scrub typhus incidence in south korea. | to clarify the geographical distribution of scrub typhus vectors in korea, a survey of larval trombiculid mites was conducted from 2005 to 2007 by collecting wild small mammals twice a year (spring and autumn) at 24 sites nationwide. a total of 67,325 mites representing 4 genera and 14 species were collected from 783 trapped rodents, corresponding to a chigger index (number of chigger mites per rodent) of 86.0. the predominant mite species were leptotrombidium pallidum (52.6%), leptotrombiduim s ... | 2014 | 25500568 |
| scrub typhus with unusual presentation. | scrub typhus is an acute, febrile zoonosis caused by an obligate intracellular bacterium orientia tsutsugamushi. the clinical manifestations of the disease range from subclinical to fatal organ failure. the common symptoms are fever, chills, headache, myalgia, dry cough, lymphadenopathy, and gastrointestinal disturbances. the presentation with complications is usually due to delay in diagnosis and treatment. we report three cases of scrub typhus that presented with features of meningo-encephalit ... | 2014 | 25489455 |
| tungiasis in northern tanzania: a clinical report from qameyu village, babati district, manyara region. | tungiasis is an infestation caused by the penetration in the skin of the gravid female of the flea tunga penetrans (t. penetrans). the current epidemiological situation of tungiasis in eastern africa is poorly known. we present the results of a cross-sectional study on tungiasis which was carried out in qameyu (northern tanzania). | 2014 | 25390058 |
| [travel-associated pneumonias]. | respiratory infections are responsible for up to 11% of febrile infections in travellers or immigrants from tropical and subtropical regions. the main pathogens are the same as in temperate climate zones: streptococcus pneumoniae, haemophilus influenzae, mycoplasma pneumoniae, chlamydophila pneumoniae, influenza viruses, legionella pneumophila. however, some pulmonary diseases can be attributed to bacterial, parasitic, viral or fungal pathogens that are endemic in tropical and subtropical region ... | 2014 | 25290923 |
| tungiasis presenting as a soft tissue oral lesion. | the sand flea tunga penetrans usually infects the feet and affects primary school-age children and elderly persons in rural uganda. tungiasis occurs nationwide but disease outbreaks have been reported in the busoga sub-region of eastern uganda, associated with poor sanitation and proximity between humans and domestic animals. ectopic tungiasis, usually seen with extensive infection and at weight-bearing body surfaces often follows exposure in highly infested environments. for patients who presen ... | 2014 | 25186303 |
| chigger mites (actinotrichida: parasitengona, trombiculidae) of poland. an updated distribution and hosts. | the existing body of knowledge regarding the trombiculidae of poland is summarized and supplemented with the results of our recent studies. although around 3000 nominal species are known worldwide, only 18 have been recorded in poland. due to the medical and veterinary importance of parasitic larvae, and the complex life cycle which presents difficulties in finding habitats occupied by postlarval forms, most species have been described exclusively from their larvae. this review provides updated ... | 2014 | 25115062 |
| treatment of tungiasis with dimeticone: a proof-of-principle study in rural kenya. | tungiasis (sand flea disease) is a neglected tropical disease, prevalent in resource-poor communities in south america and sub-saharan africa. it is caused by an inflammatory response against penetrated female sand fleas (tunga penetrans) embedded in the skin of the host. although associated with debilitating acute and chronic morbidity, there is no proven effective drug treatment. by consequence patients attempt to remove embedded sand fleas with non-sterile sharp instruments, such as safety pi ... | 2014 | 25079375 |
| estimation of the genome sizes of the chigger mites leptotrombidium pallidum and leptotrombidium scutellare based on quantitative pcr and k-mer analysis. | leptotrombidium pallidum and leptotrombidium scutellare are the major vector mites for orientia tsutsugamushi, the causative agent of scrub typhus. before these organisms can be subjected to whole-genome sequencing, it is necessary to estimate their genome sizes to obtain basic information for establishing the strategies that should be used for genome sequencing and assembly. | 2014 | 24947244 |
| insecticide-treated clothes for the control of vector-borne diseases: a review on effectiveness and safety. | insecticide-treated clothing has been used for many years by the military and in recreational activities as personal protection against bites from a variety of arthropods including ticks, chigger mites, sandflies and mosquitoes. permethrin is the most commonly used active ingredient, but others, including bifenthrin, deltamethrin, cyfluthrin, deet (n,n-diethyl-3-methylbenz-amide) and kbr3023, have also been trialled. treatment is usually carried out by home or factory dipping. however, new micro ... | 2014 | 24912919 |