| [mosquitoes potential vectors of canine heartworm in the northeast region from brazil]. | in some coastal districts of são luís, capital of the state of maranhão, brazil, the prevalence of dirofilaria immitis is more than 40% in house dogs. natural potential vectors, as found in other areas of northeastern brazil, are unknown. the aim of this study was to identify probable vectors of the disease. | 1999 | 10689372 |
| risk factors associated with asymptomatic infection by leishmania chagasi in north-east brazil. | various factors have been associated with a predisposition to the development of clinical american visceral leishmaniasis (avl). however, little information is available about the factors that predispose to asymptomatic infection. to identify the risk factors associated with asymptomatic infection, a study was carried out between july 1997 and june 1998 on children aged 0-5 years in the districts of vila nova and bom viver in the municipality of raposa in the island of são luís, state of maranhã ... | 2002 | 11925984 |
| molecular epidemiology of rabies from maranhão and surrounding states in the northeastern region of brazil. | although many outbreaks of rabies have been reported in northern brazil, few epidemiological studies of these outbreaks have been undertaken. in this study, molecular epidemiological analyses were performed using 41 rabies virus samples isolated in the maranhão (ma), pará (pa), and tocantins (to) states of northeastern brazil. a 599-bp region of the glycoprotein (g) gene was first amplified from each sample by rt-pcr, then sequenced and subjected to phylogenetic analysis. a phylogenetic tree div ... | 2006 | 16773238 |
| animal reservoirs for visceral leishmaniasis in densely populated urban areas. | leishmaniasis is a zoonotic disease of major public health and veterinary importance, affecting 88 countries with up to 2 million cases per year. this review emphasizes the animal reservoirs and spreading of visceral leishmaniasis (vl) in urban areas, particularly in two brazilian metropolitan areas, namely são luis and belo horizonte, where the disease has become endemic in the past few years. urbanization of visceral leishmaniasis in brazil during the last decades has created favorable epidemi ... | 2008 | 19736384 |
| molecular characterization of hepatozoon sp. in cats from são luís island, maranhão, northeastern brazil. | few molecular studies have been done concerning the molecular characterization of hepatozoon species among domestic and wild felids. the present work aimed to characterize molecularly the presence of hepatozoon sp. dna in cat blood samples from são luís island, maranhão state, northeastern brazil. edta-whole blood samples were collected from 200 domestic cats with outdoor and wood areas access from são luís, maranhão, brazil. each sample of extracted dna was used as a template in pcr reactions a ... | 2011 | 21607692 |
| occurrence of anti-neospora caninum and anti-toxoplasma gondii igg antibodies in goats and sheep in western maranhão, brazil. | neosporosis and toxoplasmosis are parasitic diseases which can cause reproductive problems in goats and sheep. the current study aimed to determine the occurrence of anti-neospora caninum and anti-toxoplasma gondii igg antibodies in goats and sheep from the districts of amarante do maranhão and buritirana, imperatriz microregion, western area of maranhão state, northeastern brazil, and to assess factors associated to infection by these etiologic agents. blood samples from 110 animals (46 goats a ... | 2011 | 22166386 |
| leishmania infection in humans, dogs and sandflies in a visceral leishmaniasis endemic area in maranhão, brazil. | leishmania infection in humans, dogs and sandflies was examined in the endemic visceral leishmaniasis (vl) municipality of raposa, state of maranhão, brazil. in this study, we examined leishmania chagasi infection in the blood serum of both humans and canis familiaris and the natural leishmania sp. infection rate in the sandfly vector, lutzomyia longipalpis. enzyme-linked immunosorbent assay, indirect immunofluorescence reaction and polymerase chain reaction were performed to detect leishmania i ... | 2011 | 21537682 |
| [seroprevalence, clinical and biochemical data of dogs naturally infected by leishmania and phlebotominae sandfly fauna in an endemic area in são luis island, maranhão state, brazil]. | the aim of this study was to determine the seroprevalence, clinical and biochemical profile of leishmania chagasi infection in dogs naturally infected and identify the phlebotominae fauna in an endemic area of são luis island. in this present study, 62 household mongrel dogs were sampled for antibodies anti-leishmania. the seroprevalence was 51.61%. in the clinical evaluation, 36.68% dogs were symptomatic, 38.41% were oligosymptomatic and 26.13% were asymptomatic. the most frequent signs were on ... | 2008 | 20059848 |
| leishmania (leishmania) infantum/chagasi: histopathological aspects of the skin in naturally infected dogs in two endemic areas. | in the new world, visceral leishmaniasis (vl), which is a progressive disease and frequently fatal, is caused by leishmania (leishmania) infantum/chagasi. it is endemic in many regions of brazil and occasionally occurs in non-endemic regions when dogs from an endemic area are introduced. the aim of the present study is to compare different skin infection patterns of dogs from two leishmaniasis endemic areas. a histological analysis of dogs from campo grande, mato grosso do sul state, a region wh ... | 2010 | 19854175 |
| [prevalence of infection by leishmania chagasi using elisa (rk39 and crude) and the montenegro skin test in an endemic leishmaniasis area of maranhão, brazil]. | a prospective study was undertaken in 1,520 children less than 15 years of age in são josé de ribamar, maranhão, brazil, from june 1994 to january 1995, to evaluate the prevalence and characteristics (socioeconomic, environmental, and behavioral) associated with infection by leishmania chagasi. montenegro skin test (mst) and enzyme-linked immunosorbent assay (elisa-rk39 and crude) test were used to detect infection. the statistical analysis used the chi2 test with yates correction and a p value ... | 2006 | 16410865 |
| canine visceral leishmaniasis in são josé de ribamar, maranhão state, brazil. | here, we describe the situation of canine visceral leishmaniasis in two villages of são josé de ribamar in maranhão state/brazil, where human cases have been registered. blood samples of 36 household crossbred dogs from sergio tamer village and 43 dogs from quinta village were collected and the serum used for serological diagnosis. an indirect fluorescent antibody test (ifat) and enzyme-linked immunosorbent assay (elisa) were used to detect antibodies against leishmania. the clinical examination ... | 2005 | 15967576 |
| investigation of an outbreak of endemic coccidioidomycosis in brazil's northeastern state of piauí with a review of the occurrence and distribution of coccidioides immitis in three other brazilian states. | an outbreak of coccidioidomycosis is described that involved three individuals and eight of their dogs, who had engaged in a successful hunt for nine-banded armadillos (dasypus novemcinctus) in the environs of oeiras, a community in brazil's north eastern state of piauí. diagnosis was based on clinical, serological and cultural findings. four of 24 soil samples collected in and around the burrow of an armadillo yielded cultures of coccidioides immitis, thus establishing the endemicity of that mo ... | 1999 | 11220226 |
| [canine heartworm on são luís island, northeastern brazil: a potential zoonosis]. | a survey on the prevalence of canine heartworm was conducted in 1, 495 dogs from maranhão island, state of maranhão, northeastern brazil, from 1991 to 1994, by testing for microfilariae in blood. of the total, 1,358 (12.8% of which were infected) were dogs with no known history; they included 1,265 homeless animals (10.3% with microfilariae) and 93 kept by owners at the time the survey was conducted (37.8% of which were infected). prevalence is high among dogs captured and/or living along the se ... | 1999 | 10409793 |
| [the epidemiological determinant aspects in the maintenance of visceral leishmaniasis in the state of maranhão, brazil]. | the authors analysed the visceral leishmaniasis (vl) aspects in the state of maranhão, brazil, from 1982 to 1993. the disease happens to occur predominantly in são luís island (ma) and during the epidemic period, town of são luís was pointed out as the main endemic area. the greatest frequency of cases occurred in 1993, despite the use of insecticide and dogs control. there was predominance of age between 0- to 4-year-old population with 58.04% of cases. neither the human disease nor the rainfal ... | 1996 | 8701042 |