| 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 |
| 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 |
| 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 |
| 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 |
| leishmaniasis in brazil: xviii. further evidence incriminating the fox cerdocyon thous (l) as a reservoir of amazonian visceral leishmaniasis. | major endemic areas of visceral leishmaniasis in brazil are located in the drier, poorly forested regions, principally in the northeastern states such as ceará and bahia. cases of the human disease in the amazon region are rare, very sporadic, and seldom present opportunities for epidemiological study. following the report of a fatal case near salvaterra, the island of marajó, pará state, a preliminary investigation has resulted in the isolation of a parasite regarded as leishmania donovani chag ... | 1982 | 7164150 |
| [cutaneous parasitism by leishmania (leishmania) chagasi during south american visceral leishmaniasis]. | eighteen patients from the northeastern brazilian state of ceara with proven kala-azar were studied for evidence of skin parasitism: two had ulcerative or papular skin lesions and 16 had clinically normal skin. punch biopsies (3 mm) of intact paraspinal subscapular skin were performed on all patients; in those with papular or ulcerative lesions biopsies also were taken from an active site. one of each of the subscapsular biopsies and half of each biopsy from an active lesion were studied; the ot ... | 1993 | 8353466 |
| 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 |