| feeding preferences of triatoma dimidiata maculipennis in yucatan, mexico. | to determine whether a low preference for human blood by triatoma dimidiata maculipennis stal, 1859, the only known vector of chagas' disease in yucatan, mexico, would account for the low prevalence of antibodies to trypanosoma cruzi in man in the area, the intestinal contents of 924 bugs were tested against antisera to blood antigens of chicken, opossum, dog, bat, monkey, pig, goat, rabbit, horse, human, rat, ox, cat, and armadillo. although the chicken was the primary host, man was fed upon fr ... | 1977 | 320892 |
| [pneumocystis carinii in domestic animals of the city of mexico, yucatan]. | | 1972 | 4546643 |
| infection by trypanosoma cruzi in mammals in yucatan, mexico: a serological and parasitological study. | in order to determine trypanosoma cruzi infection among mammals in yucatan, mexico, 372 animals, both wild and synanthropic including carnivores, marsupials and rodents were studied. serological studies by indirect haemagglutination (iha) were carried out to detect antibodies to t. cruzi and a parasitological study was also performed (blood smear and histopathology). of all the animals tested 18.54% were serologically positive, with a significantly higher frequency among the wild ones (33.33%) c ... | 1996 | 9216111 |
| prevalence of the dirofilaria immitis infection in dogs from merida, yucatan, mexico. | the aim of the present study was to estimate the prevalence of dirofilaria immitis infection, and to examine the relationship between host factors (gender, age and breed) and d. immitis infection in dogs. the study was designed as a cross-sectional study. a total of 676 dogs were examined for d. immitis infection. adult worms (necropsy) and blood samples were collected from all animals for diagnosis of d. immitis. blood samples were examined using a modified knott's and thick drop techniques. fi ... | 2007 | 17630215 |
| ochlerotatus taeniorhynchus: a probable vector of dirofilaria immitis in coastal areas of yucatan, mexico. | mosquito collections were done on microfilaremic dogs, positive for dirofilaria immitis (leidy), for 15 consecutive nights in celestun, yucatan, southeastern mexico, during january 2007. in total, 275 mosquitoes (3 male and 272 female) of five species were collected: ochlerotatus taeniorhynchus (wiedemann), ochlerotatus sollicitans (walker), culex quinquefasciatus say, culex interrogator (dyar & knab), and aedes aegypti (l.). oc. taeniorhynchus was the species most frequently collected, and it h ... | 2008 | 18283960 |
| american trypanosomiasis in dogs from an urban and rural area of yucatan, mexico. | american trypanosomiasis in dogs is reported from south of the united states to argentina and chile. it is transmitted through the contact of dogs with reduviid insects when they feed; reduviid insects are well established in the southern state of yucatan, mexico. however, there are no reports available about trypanosomiasis prevalence in dogs of urban and rural areas. a cross-sectional study was performed in 345 stray dogs, 102 from a rural community of yucatan (tunkas) and 243 from merida, cap ... | 2008 | 18597661 |
| serological survey of ehrlichia canis in stray dogs from yucatan, mexico, using two different diagnostic tests. | canine ehrlichiosis is a disease produced by the rickettsial organism ehrlichia canis. reported prevalence may vary greatly depending on the test and sampling method used. for the serological detection of antibodies against e. canis, the indirect immunofluorescence antibody test (ifa) is considered the gold standard. however, other available serological techniques such as the indirect immunoperoxidase technique (ipt) have not yet been tested and may be efficient in detecting specific antibodies. ... | 2009 | 18945189 |
| a dog naturally infected with rickettsia akari in yucatan, méxico. | rickettsia akari is the causative agent of rickettsialpox, a primarily urban mite-borne rickettsiosis that is encountered in the united states and in a few countries around the world. its vector is the mite liponyssoides sanguineus, which is found on rats and mice, which serve as reservoirs for the disease. in this work we report a severe animal case of r. akari infection with two unusual features: r. akari was found in a dog, and its potential vector was a tick. | 2009 | 19492943 |
| incrimination of the mosquito, aedes taeniorhynchus, as the primary vector of heartworm, dirofilaria immitis, in coastal yucatan, mexico. | mosquito collections were carried out on microfilaraemic dogs, positive for dirofilaria sp., for 18 consecutive nights in the coastal town of celestún, yucatan, southeast mexico, during the rainy season (august) of 2007. a total of 292 female mosquitoes representing 12 species of dipteran culicidae were collected: anopheles albimanus (wiedemann); anopheles crucians (wiedemann); anopheles pseudopunctipennis (theobald); culex coronator (dyar & knab); culex interrogator (dyar & knab); culex nigripa ... | 2010 | 20572932 |
| host-feeding preference of the mosquito, culex quinquefasciatus, in yucatan state, mexico. | studies were conducted to determine the host-feeding preference of culex quinquefasciatus say (diptera: culicidae) in relation to the availability of human and domestic animals in the city of merida, yucatan state, mexico. mosquitoes were collected in the backyards of houses using resting wooden boxes. collections were made five times per week from january to december 2005. dna was extracted from engorged females and tested by pcr using universal avian- and mammalian-specific primers. dna extrac ... | 2010 | 20578953 |
| higher seroprevalence of trypanosoma cruzi infection in dogs than in humans in an urban area of campeche, mexico. | abstract the reservoir capacity of dogs for trypanosoma cruzi infection was analyzed in the city of campeche, an urban town located in the yucatan peninsula in mexico. the city is inhabited by ∼96,000 dogs and ∼168,000 humans; triatoma dimidiata is the only recognized vector. in the present study, we sampled 262 dogs (148 stray dogs and 114 pet dogs) and 2800 young people (ranging in age between 15 and 20 years old) and tested for t. cruzi antibodies by enzyme-linked immunosorbent assay, indirec ... | 2010 | 21028957 |
| an epidemiological study of intestinal parasites of dogs from yucatan, mexico, and their risk to public health. | abstract the prevalence of intestinal parasites in dogs and factors associated were studied in a rural community of yucatan (southern mexico), with special attention to those gastrointestinal parasites potentially transmitted to man. one hundred thirty dogs from 91 households were studied. fecal samples were processed by the centrifugation-flotation and the mcmaster techniques. to determine factors associated with zoonotic parasites in dogs, univariate analysis was performed, using sex, age, and ... | 2011 | 21395413 |
| an iron-superoxide dismutase antigen-based serological screening of dogs indicates their potential role in the transmission of cutaneous leishmaniasis and trypanosomiasis in yucatan, mexico. | an increasing number of studies have reported high infection rates for american cutaneous leishmaniasis in dogs, which have thus been proposed as the reservoir host. canine leishmaniasis is widespread in different states in mexico, where a number of leishmania species have been isolated from dogs. in the present study, the detection of different leishmania species is described in stray dogs from two localities, namely tulum and celestún on the yucatan peninsula (mexico). the use of iron-superoxi ... | 2011 | 21323424 |
| serological survey of american trypanosomiasis in dogs and their owners from an urban area of mérida yucatàn, méxico. | american trypanosomiasis is an important zoonotic disease which affects more than 15 million persons in america. in mexico, chagas' disease is widely distributed in the country mostly in states with tropical weather conditions, including yucatan. a cross-sectional study was performed on serum samples from 35 dogs and their owners (n = 75) from the south area of merida city. specific igg antibodies against trypanosoma cruzi (t. cruzi) using enzyme-linked immunosorbent assay, immunofluorescence an ... | 2010 | 20537099 |
| in vitro cytotoxic activity of nine plants used in mayan traditional medicine. | plants have been used in folk medicine by mayan ancient people from the yucatan peninsula, mexico, to treat some diseases considered as cancer diseases such as chronic wounds or tumors. | 2009 | 19071205 |
| evaluation of selected tropical seaweeds for in vitro anti-trichomonal activity. | human parasitic infections are a serious problem in tropical and sub-tropical developing countries. trichomoniasis, responsible for the annual infection of 180 million people, is a common sexually transmitted disease caused by the protozoan trichomonas vaginalis. traditionally seaweeds have been used in folk medicine by coastal people in asia and the caribbean to treat parasitic infections and are a valuable source of novel anti-trichomonals. | 2008 | 18725281 |
| serological survey of canine leptospirosis in the tropics of yucatan mexico using two different tests. | blood samples were taken from 400 stray dogs. the microscopic agglutination test (mat) and enzyme-linked immunosorbent assay (elisa) test were implemented using leptospira interrogans serogroups canicola, hardjo, pyrogenes, panama, pomona, tarassovi, icterohaemorrhagiae, gryppotyphosa, wolffi and brastislava. for the elisa test, sonicated antigen from above mentioned cultures was used. a conjugate ap-labeled anti-dog igg antibody was used, the optimal cut-off point of elisa was set at 1.34. conc ... | 2008 | 18299115 |
| prevalence of fetal resorption in stray dogs in yucatan, mexico. | to determine the prevalence of fetal resorption in 77 pregnant bitches and its association with the age, size and body condition score of the bitch and to determine the frequency of transuterine migration of embryos. | 2006 | 16674721 |
| [prevalence of positive skin tests to indoor allergens in preschooler children with respiratory allergy in merida, yucatan, mexico]. | infantile asthma and rhinitis are commonly thought to be caused by indoor allergens but preschooler children are not commonly skin tested. | 2005 | 16568709 |
| molecular epizootiology of rabies associated with terrestrial carnivores in mexico. | epizootiological patterns of rabies are described, using antigenic and genetic analysis of samples obtained from infected domestic and wild mammals in 20 mexican states during 1976-2002. two independent origins are suggested for rabies in mexican carnivores. one group shares ancestry with canine rabies, while the other group appears to share a common origin with bat rabies in north america. more than 12 sublineages were found in rabid dog populations, suggesting at least six major spatio-tempora ... | 2005 | 15896399 |
| ehrlichia canis in dogs in yucatan, mexico: seroprevalence, prevalence of infection and associated factors. | the aim of this study was to determine the prevalence of infection, seroprevalence, and factors associated with antibody response to ehrlichia canis in dogs of yucatan, mexico. the study was carried out in four veterinary clinics located in merida, the capital city of yucatan, mexico. blood samples were obtained from a total of 120 dogs, and each animal was physically examined to determine age and sex, as well as to record any clinical signs of platelet-related bleeding. blood samples were analy ... | 2005 | 15619376 |
| factors affecting the prevalence of mange-mite infestations in stray dogs of yucatán, mexico. | the aim of the present study was to determine the factors affecting the prevalence of mange-mite infestations in stray dogs of yucatán, mexico. the study was carried out in 200 stray dogs of mérida capital city of yucatán, mexico. four samples (head, thoracic-abdominal area, extremities and ear) were taken from each animal by skin scraping and examined microscopically in 10% koh solution to detect the presence of mites. mites were also collected from the external ear canal of dogs using cotton-t ... | 2003 | 12860068 |
| identification of ctenocephalides felis fleas as a host of rickettsia felis, the agent of a spotted fever rickettsiosis in yucatań, mexico. | in search for the vector of the recently recognized spotted fever rickettsiosis of the yucatán, ticks, fleas, and lice were collected from vegetation and dogs in localities where seropositive persons had been found. the arthropods were examined by polymerase chain reaction (pcr) using primers for the genus-specific 17-kda protein gene followed by restriction fragment length polymorphism (rflp) and dna sequencing. eleven (20%) of 54 pools of ctenocephalides felis fleas contained dna of rickettsia ... | 2002 | 12653300 |
| detection of human influenza virus in yucatan, mexico. | influenza virus is the most common cause of acute respiratory infections (ari) world wide. in patients with chronic condition, infection by the influenza virus can cause complications such as pneumonia which may have fatal outcome. the aim of this work was to determine the frequency of human influenza virus in outpatients with influenza-like illness (ili) and in those patients admitted to hospital with community acquired pneumonia (cap) in yucatan, mexico (october 1998-july 1999). | 2002 | 12587415 |
| clinical-epidemiological study of leptospirosis in humans and reservoirs in yucatán, méxico. | a leptospirosis clinical-epidemiological study was made in humans and reservoirs in the state of yucatán, méxico. interviews and serological analyses were made on 400 persons from an open population, 439 probable cases of leptospirosis and 1060 animal reservoirs (cows, pigs, dogs, rats and opossums). igm leptospira dipstick and microscopic agglutination test (mat) was used to detect human antibodies to leptospiras and serovar respectively. leptospirosis incidence in humans was 2.2/100,000 inhab. ... | 2002 | 12532218 |
| [creeping verminous eruption in yucatan, mexico. clinico-epidemiological study]. | | 1976 | 1019773 |