| petasiger dietz, 1909 (trematoda: echinostomatidae) in birds and mollusks from brazil. | species of petasiger dietz, 1909 are intestinal trematodes of aquatic birds. despite the diversity of described species in europe and north america, only two south american species are known and no species have been previously reported in birds from brazil. during a study of helminths recovered from the least grebe, tachybaptus dominicus (linnaeus, 1766), from the state of minas gerais, brazil, adult trematodes identified as petasiger novemdecim lutz, 1928 were found. the prevalence of infection ... | 2013 | 24142178 |
| epidemiological aspects of lice (menacanthus species) infections in laying hen flocks from the state of minas gerais, brazil. | the epidemiology of chicken lice species such as menacanthus stramineus, m. cornutus and m. pallidulus were studied during an observational, analytical and sectional survey, to determine predisposing factors for their occurrence in laying hen farms in the state of minas gerais, brazil. a total of 431 houses on 43 farms were visited in 2012. m. cornutus, m. stramineus and m. pallidulus occurred in 20.9%, 11.6% and 11.6% of farms, respectively. the frequencies of occurrence of m. cornutus, m. stra ... | 2016 | 26642864 |
| overlapping toxoplasma gondii genotypes circulating in domestic animals and humans in southeastern brazil. | although several toxoplasma gondii genotyping studies have been performed in brazil, studies of isolates from animals in the state of minas gerais are rare. the objective of this study was to conduct a genotypic characterization of t. gondii isolates obtained from dogs, free-range chickens, and humans in minas gerais and to verify whether the t. gondii genotypes circulating in domestic animals correspond to the genotypes detected in humans. genetic variability was assessed by restricted fragment ... | 2014 | 24587295 |
| experimental infection of calomys callosus with atypical strains of toxoplasma gondii shows gender differences in severity of infection. | there is a significant genetic diversity of toxoplasma gondii in brazil. two parasite isolates were recently obtained from chickens in uberlândia, minas gerais state, brazil, namely, tgchbrud1 and tgchbrud2. in this study, we investigated calomys callosus susceptibility to these atypical t. gondii strains. male and female animals were intraperitoneally infected with tachyzoites and monitored to evaluate body weight change, morbidity, and mortality. immunohistochemical assay and qpcr were perform ... | 2014 | 24781027 |
| widespread presence of human-pathogenic enterocytozoon bieneusi genotypes in chickens. | a total of 151 fecal specimens from chickens were randomly collected from local markets in uberlândia and belo horizonte in the state of minas gerais, brazil, to evaluate the presence of enterocytozoon bieneusi by polymerase chain reaction (pcr). enterocytozoon bieneusi was identified in 24 fecal samples (15.9%). this represents the first report of e. bieneusi in chickens in brazil. all pcr-positive specimens were sequenced and 4 genotypes were identified, peru 6, peru 11, type iv, and d. all fo ... | 2016 | 26827870 |
| melanoides tuberculata as intermediate host of philophthalmus gralli in brazil. | melanoides tuberculata that naturally harbored trematode larvae were collected at the pampulha dam, belo horizonte (minas gerais, brazil), during malacological surveys conducted from 2006 to 2010. from 7,164 specimens of m. tuberculata collected, 25 (0.35%) were infected by cercariae, which have been morphologically characterized as belonging to the megalurous group, genus philophthalmus. excysted metacercariae were used for successful experimental infection of gallus gallus domesticus, and adul ... | 2010 | 21225216 |
| molecular analysis of brazilian infectious bronchitis field isolates by reverse transcription-polymerase chain reaction, restriction fragment length polymorphism, and partial sequencing of the n gene. | molecular analysis of 15 brazilian infectious bronchitis virus (ibv) isolates, obtained from clinical outbreaks of the disease in chickens (broilers or layers) in the state of minas gerais (brazil) between 1972 and 1989, is reported. using the n protein gene as target, ibvs were analyzed by reverse transcription-polymerase chain reaction/restriction fragment length polymorphism (rt-pcr/rflp) with the restriction enzymes avaii, hphi, sau96i, and tsp509i and cdna sequencing. results obtained from ... | 2006 | 17274284 |
| genotyping of infectious bursal disease virus strains by restriction fragment length polymorphism analysis of the vp1, vp2, and vp3 genes. | summary. this study aimed to genotype infectious bursal disease virus (ibdv) isolates from the minas gerais state poultry industry. rna was extracted from bursae obtained from field cases without passage or commercial vaccines. genetic subtyping of ibdv isolates and vaccine strains was carried out by the reverse transcriptase-polymerase chain reaction (rt-pcr) and restriction fragment length polymorphism (rflp) analysis. a 588-bp fragment in the vp1 gene, an 847-bp fragment in the vp2 gene, and ... | 2005 | 16404990 |
| [epidemiology of toxoplasma gondii infection in the municipality of ribeirâo das neves, mg. i. importance of domestic animals as sources of t. gondii infection in humans]. | during a six month period (june 1983 to january 1984), a case-control study was carried out to determine if the variables associated with domestic animals contact would be correlated with the prevalence of toxoplasma gondii infection. a randomized sample of 500 subjects from the population of ribeirão das neves, minas gerais, brazil was studied. a statistically significant correlation was found with cat, chicken and pig contact but none with consumption of meat, milk and eggs. | 1995 | 7480915 |
| the occurrence of an intraerythrocytic microorganism neitziella rezendei gen. nov. sp. nov. (microtatobiotes, rickettsiales) of poultry in brazil. | an extremely polymorphous intraerythrocytic microorganism occurring in naturally infected turkeys, ducks and fowls has been discovered in the states of minas gerais, rio de janeiro and espirito santo. 2. studies on the morphology and biology have shown that it is a hitherto undescribed heteroxenous parasite for which the name neitziella rezendei gen. nov., sp. nov. is proposed. 3. its morphological features permit its inclusion in the class microtatobiotes and order rickettsiales. 4. microscopic ... | 1976 | 13631 |
| profile of the trypanosoma cruzi vector infestation in jaboticatubas, state of minas gerais, brazil. | this work aimed to analyze the triatomine infestation scenario in jaboticatubas after 30 years of the uninterrupted actions of the program of chagas disease control. | 2014 | 24474024 |
| phenotypic and genotypic characterization of two toxoplasma gondii isolates in free-range chickens from uberlândia, brazil. | the aim of this study was to determine the seroprevalence of toxoplasma gondii infection in free-range chickens from uberlândia, minas gerais state, brazil, and characterize the genotypic and phenotypic features of two isolates of this parasite, considering the importance of these hosts in the epidemiology of toxoplasmosis. serum samples from 108 free-range chickens were obtained from ten different districts, and submitted to the modified agglutination test (mat) for the presence of anti-t. gond ... | 2016 | 26743347 |
| molecular characterization of infectious laryngotracheitis virus in naturally infected egg layer chickens in a multi-age flock in brazil. | the virus responsible for an outbreak of infectious laryngotracheitis (ilt) in a multi-age flock of egg layer chickens under quarantine in brazil was characterized. layer chickens from this area with circulating gallid herpesvirus 1 (gahv 1) were evaluated using histopathology and molecular characterization techniques based on sequences of infected-cell polypeptide 4 (icp4) and thymidine kinase (tk) genes. the infected chickens that were analyzed were pcr-positive for gahv-1 in the trachea and n ... | 2015 | 25385176 |
| identification of sandflies (diptera: psychodidae: phlebotominae) blood meals in an endemic leishmaniasis area in brazil. | the aim of this study was to identify blood meals of female sandflies captured in the municipality of governador valadares, an endemic area of visceral and cutaneous leishmaniasis, in the state of minas gerais, brazil. from may 2011 to january 2012, captures were performed using hp light traps in four districts. there were 2,614 specimens (2,090 males and 524 females) captured; 97 engorged females were identified belonging to the species lutzomyia longipalpis(82.1%) and lutzomyia cortelezzii(17. ... | 0 | 26422156 |
| characterization of toxoplasma gondii from domestic animals from minas gerais, brazil. | in an attempt to isolate and characterize toxoplasma gondii from the state of minas gerais, brazil, musculature samples from 72 pigs, 25 dogs, 28 free-range chickens and 50 chickens produced in industrialized farms were collected. antibodies to t. gondii have not been detected in pigs, but were found in nine (40.9 %) out of 22 dogs, and in 15 (53.6 %) of 28 free range chickens. t. gondii was not isolated from pigs and industrialized chickens, but from eight dogs and 11 free range chickens. in or ... | 2006 | 16800123 |
| identification and isolation of psittacid herpesvirus from psittacids in brazil. | psittacid herpesvirus (pshv) was isolated from 41 birds kept in captivity in belo horizonte, minas gerais/brazil using chicken embryo fibroblasts (cef) cell cultures. for this study, leukocytes or cloacal swabs of live birds were used. also, portions of liver, spleen or kidney from birds collected at necropsy were utilized for these tests. pcr tests confirmed the presence of pshv in 100% of samples. thirty-three of the pcr products were sequenced and the results disclosed a 99% and 100% identity ... | 2011 | 21782357 |
| human vaccinia-like virus outbreaks in são paulo and goiás states, brazil: virus detection, isolation and identification. | since october 2001, the adolfo lutz institute has been receiving vesicular fluids and scab specimens of patients from paraíba valley region in the são paulo and minas gerais states and from são patricio valley, in the goiás state. epidemiological data suggested that the outbreaks were caused by cowpox virus or vaccinia virus. most of the patients are dairy milkers that had vesiculo-pustular lesions on the hands, arms, forearms, and some of them, on the face. virus particles with orthopoxvirus mo ... | 2004 | 15654477 |
| [control of triatoma sordida in rural peri-domestic environment of the porteirinha municipality, minas gerais, brazil]. | triatoma sordida, a predominantly peridomestic species, is currently the triatomine species most frequently collected in brazil. to evaluate the effectiveness of control activities against this species, a survey to determine infestation rates was carried out in october 1993 in 12 rural localities in the municipality of porteirinha, state of minas gerais, brazil. in the survey, 772 t. sordida were captured, of which 3.6% were infected with trypanosoma cruzi. of the 406 dwellings investigated, 34. ... | 1998 | 9503959 |
| epidemiology of megninia spp. in laying flocks from the state of minas gerais, brazil. | aspects related to the epidemiology of megninia ginglymura were studied, in order to determine predisposing factors for the occurrence in layer chicken houses of commercial farms in the state of minas gerais, brazil. an observational, cross-sectional, analytical survey was conducted for identifying major risks or protection factors for infestations. four hundred thirty-one houses located in forty-three farms were visited in 2012. regarding the farms, 17 (39.53%) had chickens infested by m. gingl ... | 2015 | 26154959 |
| plasmodium juxtanucleare in the state of minas gerais, brazil. studies on its prevalence and some aspects of its biology. | | 1972 | 5084218 |
| chicken carcasses as a source of campylobacter jejuni in belo horizonte, brazil. | the presence of campylobacter jejuni was investigated in stool specimens from chicken meat workers and in ready-for-market chicken carcasses from one industrial and nine non industrial slaughters in belo horizonte. in the latter c. jejuni was isolated from 19 (38.0%) of the 50 chicken carcasses and from 2 (13.3%) of the stool specimens obtained from 15 chicken meat workers. in the industrial slaughter it was found in only 1 (2.0%) of the 50 chicken carcasses and it was not isolated from any of t ... | 1990 | 2135487 |
| leishmaniasis in brazil. xix: visceral leishmaniasis in the amazon region, and the presence of lutzomyia longipalpis on the island of marajó, pará state. | sporadic cases of visceral leishmaniasis in amazonian brazil appear limited to pará state, in the lower amazon valley and principally near the atlantic coast. the fox cerdocyon thous (l.) has been incriminated as a natural host of the causative parasite, leishmania donovani chagasi, but past doubts have existed over the identification of the most likely vector as lutzomyia (lutzomyia) longipalpis (lutz & neiva, 1912). investigations on two of five recent cases of visceral leishmaniasis of man in ... | 1983 | 6623589 |