Anti-Leptospira spp. antibodies in wild animals from Ribeirão Preto city zoo in São Paulo State, Brazil

Leptospirosis may affect all domestic and wild animals as well as human beings. Some serological studies have shown the involvement of wild species in the epidemiology of the disease. Once captive wild animals are not much studied, especially in Brazil, the present study aimed to detect anti- Leptos...

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Published in:Brazilian journal of veterinary research and animal science Vol. 47; no. 3; pp. 237 - 242
Main Authors: Carolina dos Santos Silva, Raul José Silva Gírio, Guilherme Guerra Neto, Michelle Brich, Lucas Alves de Souza Santana, Fábio Henrique Amâncio, Julia Rassi Mariani, Pedro Meirelles Favaretto Wessort
Format: Journal Article
Language:Portuguese
Published: Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia 01-06-2010
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Summary:Leptospirosis may affect all domestic and wild animals as well as human beings. Some serological studies have shown the involvement of wild species in the epidemiology of the disease. Once captive wild animals are not much studied, especially in Brazil, the present study aimed to detect anti- Leptospira spp. antibodies in animals from Ribeirão Preto city zoo, in São Paulo state, Brazil. Blood samples were collected from captive birds, fish, reptiles and mammals, sinanthropics and free-living animals and also from employees between March and October, 2006. Four hundred and three blood samples were obtained, 388 animals' samples (110 reptiles, 143 birds, 110 mammals and 25 fish) and 15 humans'. The sera were analysed by Microscopic Agglutination Test using 22 serovars from pathological leptospiras and two from non-pathological serovars. Among the animal samples, 339 were from captive animals, and 49 from free-living ones, captured with traps inside the zoo. One hundred and three (103/388 = 26.5%) samples reacted to leptospirosis, ninety-two (92/339 = 27.1%) samples were from captive animals and eleven (11/49 = 22.4%) from free-living ones. All humans' samples were negative. Serological titles varied from 40 to 5.120, with predominance of titles between 40 and 80 and the most frequent serovars were Patoc, Andamana, Canicola, Icterohaemorrhagiae and Panama. A leptospirose acomete todos os animais domésticos, selvagens e os seres humanos. Alguns estudos sorológicos realizados têm demonstrado o envolvimento de espécies selvagens na epidemiologia da doença. Uma vez que populações cativas de animais selvagens são pouco estudadas, principalmente no Brasil, o presente estudo teve como objetivo a detecção de anticorpos anti-Leptospira spp. em animais selvagens de cativeiro e de vida livre do Zoológico Municipal de Ribeirão Preto, estado de São Paulo, Brasil. Durante o período de março a outubro de 2006 foram colhidas 403 amostras de sangue das quais 388 animais (110 répteis, 143 aves, 110 mamíferos e 25 peixes) e 15 amostras de funcionários do zoológico Dentre as 388 amostras de animais, 339 eram animais cativos e 49 eram animais de vida livre capturados pelo uso de armadilhas. Os soros sanguíneos foram analisados por meio da prova de Soroaglutinação Microscópica (SAM) utilizando-se antígenos de 22 sorovares de leptospiras patogênicas e dois sorovares de leptospiras não patogênicas. Foram reagentes para leptospirose 103 (103/388 = 26,5%) amostras, sendo 92 (92/339 = 27,1%) amostras de animais cativos e 11 (11/49 = 22,4%) de animais de vida livre. As 15 amostras de soro humanas foram negativas. Os títulos sorológicos nas amostras reagentes variaram de 40 a 5.120 com predominância dos títulos 40 e 80 e os sorovares Patoc, Andamana, Canicola, Icterohaemorrhagiae e Panama foram os mais frequentes.
Bibliography:http://revistas.usp.br/bjvras/article/view/26862
ISSN:1413-9596
1678-4456