| leishmaniasis in brazil. xxi. visceral leishmaniasis in the amazon region and further observations on the role of lutzomyia longipalpis (lutz & neiva, 1912) as the vector. | further evidence is presented incriminating the sandfly lutzomyia longipalpis as the vector of leishmania chagasi, the causative agent of american visceral leishmaniasis, in the amazon region of brazil. during an outbreak of the disease in santarém, pará state, this insect was shown to be the only species of sandfly consistently present in and around the patient's homes, where it often occurred in very large numbers. of 491 specimens dissected, 35 (7.14%) proved to be infected, and isolates of l ... | 1985 | 4002291 |
| epidemiology of chagas' disease in the state of ceará, brazil. iv. the role of dogs and cats as domestic reservoir. | | 1974 | 4220212 |
| environmental sources of cryptosporidium in an urban slum in northeastern brazil. | cryptosporidium is an important cause of diarrheal disease in children worldwide. to elucidate the environmental sources of this parasite, we selected an urban slum in fortaleza, brazil, a community with a known high incidence of cryptosporidiosis, and examined both stool smears from household animals (n = 127) and filtrates from local water sources (n = 18) for cryptosporidium oocysts. because previous work in this community has demonstrated the seasonal nature of human infection with cryptospo ... | 1993 | 8357090 |
| plague surveillance in brazil: 1983-1992. | plague caused by yersinia pestis, has persisted in brazil in several natural foci spread throughout rural areas in the states of ceara, paraiba, pernambuco, piaui, rio grande do norte, alagoas, bahia, minas gerais and rio de janeiro. nationwide surveillance of plague in brazil based on serological testing started in 1983. we now present an update report of the examinations carried out in our laboratory from 1983 to 1992. the passive hemagglutination test for antibodies against fraction 1a antige ... | 1995 | 8731264 |
| 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 |
| [survey of canine kala-azar in ceara. latest results]. | | 1963 | 14182859 |
| high rate of microsporum canis feline and canine dermatophytoses in northeast brazil: epidemiological and diagnostic features. | over a one year period (november 2000-december 2001), clinical specimens from 189 dogs and 38 cats, from the city of fortaleza, ceará, brazil, were examined at the specialized medical mycology center at the federal university of ceará to detect animals with dermatophytoses. the mycological analyses were conducted by direct microscopy and by fungal culture on sabouraud agar, sabouraud chloramphenicol agar and mycosel agar. dermatophytes were isolated from 27 of the 189 (14.3%) canine specimens an ... | 2003 | 14682455 |
| [feeding patterns of triatoma pseudomaculata in the state of ceara, brazil]. | t. pseudomaculata, a peridomicilar species, has low rates of t. cruzi infection. the occurrence of this triatomine in the domicile and its feeding patterns was investigated to identify potential t. cruzi reservoirs. | 2005 | 15654457 |
| rabies virus maintained by dogs in humans and terrestrial wildlife, ceará state, brazil. | rabies viruses circulating in ceará, brazil, were identified by molecular analysis to be related to variants maintained by dogs, bats, and other wildlife. most of these viruses are associated with human rabies cases. we document the emergence of a rabies virus variant responsible for an independent epidemic cycle in the crab-eating fox (cerdocyon thous). | 2006 | 17326958 |
| repetitive sequences in the its1 region of the ribosomal dna of tunga penetrans and other flea species (insecta, siphonaptera). | different tunga penetrans isolates from various hosts obtained from south america (fortaleza. brazil) have been studied by nucleotide sequence comparison of the first and the second internal transcribed spacer (its1, its2) of the ribosomal deoxyribonucleic acid (rdna) and part of the mitochondrial 16s rdna. results show no significant host-dependent sequence differences. no indication for intraindividual and intraspecific polymorphisms could be detected. comparing the its1 spacer region of t. pe ... | 2008 | 17952470 |
| [prevalence of antibodies against yersinia pestis in domestic carnivores, in plague foci in the state of ceará]. | the prevalence of antibodies against yersinia pestis in domestic carnivores (dogs and cats), in plague areas in the state of ceará, was analyzed to establish the importance of monitoring these animals within the routine practice of the plague control program. over the decade 1997-2006, 146,732 serum samples were examined (95,883 from dogs and 50,849 from cats), of which 2,629 (2,234 from dogs and 395 from cats) proved to be positive. the prevalence among dogs (85%) was higher than among cats (15 ... | 2009 | 20209360 |
| renal involvement in human rabies: clinical manifestations and autopsy findings of nine cases from northeast of brazil. | a retrospective study was conducted in nine patients with rabies admitted to a hospital of fortaleza, brazil. autopsy was performed in all cases. the ages ranged from three to 81 years and six were males. they all were bitten by dogs. the time between the accident and the hospital admission ranged from 20 to 120 days (mean 45 +/- 34 days). the time until death ranged from one to nine days (mean 3.3 +/- 5.5 days). the signs and symptoms presented were fever, hydrophobia, aerophobia, agitation, di ... | 2005 | 16553320 |
| survey of bacterial microorganisms in the conjunctival sac of clinically normal dogs and dogs with ulcerative keratitis in fortaleza, ceará, brazil. | the ocular microflora in dogs has not been established in north-east brazil. thus, the main aim of this research was to determine the bacterial microorganisms in the conjunctival sac of clinically normal dogs and dogs with ulcerative keratitis in fortaleza, ceará, brazil. | 2005 | 15644098 |
| [influence of ddtization on the incidence of human kala-azar in ceara. new data]. | | 1963 | 14182862 |
| [surveillance of plague in the state of ceará: 1990-1999]. | serological surveillance activities regarding the foci of plague in ceará state have detected a rising number of sentinel animals with antiplague antibodies in 1995, with a peak in 1997 demonstrating an increase in the plague bacteria activities throughout all the foci investigated. from a total of 110,725 serum samples collected from rodents (7,873) and domestic carnivores (102,852) analyzed by the hemaglutination technique (ha) for antibodies against f1 antigen of yersinia pestis 905 samples t ... | 2002 | 12011922 |
| [dermatophytoses in the urban environment and the coexistence of man with dogs and cats]. | there have been submitted to clinical exam in laboratory of dermatophytosis and inquired about possible contact with domestic animals (dogs and cats) 158 patients living in the urban area of fortaleza, that showed lesions suspected of dermatophytosis. this search associated to the obtained data in questionnaires permitted us to identify the frequency of domicile outbreaks. within the 83 people with dermatosis isolated of human infections, prevailed the anthropophilic species over the zoophilic o ... | 1997 | 9265224 |
| [evaluation of direct agglutination tests in the detection of leishmania (viannia) braziliensis in possible reservoirs of cutaneous american leishmaniasis in the state of ceará]. | in order to evaluate the aplicability of the direct agglutination test (dat) as a method of detection of the natural canine infection for leishmania (viannia) braziliensis, it was realized a study involving the serum of naive dogs from serra de baturite, ceara state, an endemic area of cutaneous leishmaniasis, and others from curitiba, parana state, a non endemic area. the results indicate the possibility of using this sorologic test to the epidemiologic research of the infection in the reservoi ... | 1996 | 8713609 |
| epidemiological studies on american leishmaniasis in ceará state, brazil. molecular characterization of the leishmania isolates. | two methods of molecular characterization, using monoclonal antibodies and enzyme electrophoresis, were employed in the identification of 36 stocks of leishmania isolated from human and canine cases of american visceral (avl) and cutaneous (acl) leishmaniases in the northern part of ceará state, brazil. molecular homogeneous strains of leishmania donovani (chagasi) isolated from both human and canine hosts were detected in 14 municipalities. two more parasite species, l. braziliensis braziliensi ... | 1988 | 3256276 |
| epidemiology of visceral leishmaniasis in northeast brazil. | epidemiologic aspects of the relationship between infection with leishmania chagasi and development of clinical visceral leishmaniasis (vl) were studied in all children < 11 years old in a defined, endemic, rural area of the state of ceará in northeast brazil. antileishmanial antibodies were measured in the same subjects by elisa on six occasions between may 1987 and august 1989. seroconversion was documented during this period in 108 children, with a cumulative annual incidence of 4.6%. twelve ... | 1992 | 1402024 |
| Investigation of Chagas disease in four periurban areas in northeastern Brazil: epidemiologic survey in man, vectors, non-human hosts and reservoirs. | Chagas disease was investigated in four periurban areas of Ceará state, northeastern Brazil, through serological, parasitological and molecular methods in humans, reservoirs and vectors. A cross-sectional survey revealed a seroprevalence rate of 1.2% (13/1076 residents, six also proving positive through PCR). Trypanosoma cruzi infection was not detected in children under 10 years old. Triatoma pseudomaculata prevailed in the peridomiciles: 63 specimens, 69% (34/49) infected with trypanosomatids. ... | 2011 | 22136953 |
| prevalence and risk factors of toxoplasmosis among pregnant women in fortaleza, northeastern brazil. | we determined the seroprevalence of toxoplasma gondii and associated risk factors among 963 pregnant women attending an obstetric hospital in fortaleza, brazil. seroprevalences of igg and igm against t. gondii were 68.6% (95% confidence interval [ci] = 65.6-71.6%) and 0.5% (95% ci = 0.06-1.0%), respectively. seroprevalence of igg was high in women less than 25 years of age (91.7%) and in low-income women (odds ratio [or] = 1.40, 95% ci = 1.02-1.90). multivariate regression analysis showed that c ... | 2010 | 20810816 |
| gastrointestinal and ectoparasites from urban stray dogs in fortaleza (brazil): high infection risk for humans? | dogs are important definite or reservoir hosts for zoonotic parasites. however, only few studies on the prevalence of intestinal parasites in urban areas in brazil are available. we performed a comprehensive study on parasites of stray dogs in a brazilian metropolitan area. we included 46 stray dogs caught in the urban areas of fortaleza (northeast brazil). after euthanization, dogs were autopsied. ectoparasites were collected, and the intestinal content of dogs were examined for the presence of ... | 2010 | 20532563 |
| drought, smallpox, and emergence of leishmania braziliensis in northeastern brazil. | cutaneous leishmaniasis caused by leishmania (vianna) braziliensis is a major health problem in the state of ceará in northeastern brazil. we propose that the disease emerged as a consequence of the displacement of persons from ceará to the amazon region following the great drought and smallpox epidemic of 1877-1879. as the economic and social situation in ceará deteriorated, approximately 55,000 residents migrated to the amazon region to find work, many on rubber plantations. those that returne ... | 2009 | 19523291 |
| cross-sectional serological study of canine leishmania infection in fortaleza, ceará state, brazil. | visceral leishmaniasis (vl) is one of the most important reemerging parasitic disease in the world. the domestic dog is the main reservoir in urban environments. the aim of this work was to extend the knowledge on canine leishmania infection in the city of fortaleza in northeastern brazil, identifying the risk factors inherent in dog susceptibility to the infection. two populations were analyzed, domestic dogs from clinics and the veterinary hospital unit of ceará state university and stray dogs ... | 2008 | 18565676 |