Anticorpos para Leptospira spp. em mamíferos silvestres do município de Monte Mor, estado de São Paulo.
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2019-11-01
Autores
Cutolo, Andre Antonio
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Universidade Estadual Paulista (Unesp)
Resumo
A leptospirose é uma zoonose potencialmente fatal causada por bactérias do gênero Leptospira. Espécies animais hospedeiras adaptadas a sorovares específicos podem ser portadoras e dispersoras ambientais da bactéria. De 2009 a 2011, 45 mamíferos silvestres (39 gambás Didelphis albiventris, quatro ouriços Sphiggurus villosus, um ratão-do-banhado Myocastor coypus e uma capivara Hidrochoerus hidrochaeris) encontrados por munícipes em áreas antrópicas de Monte Mor, SP, foram capturados, contidos e tiveram amostras de soro coletadas para detecção de anticorpos para Leptospira. As amostras foram tituladas pela técnica de soroaglutinação microscópica (MAT) para diferentes sorogrupos. Um total de 35,56% (16/45) animais foram reagentes para presença de anticorpos para Leptospira para um total de 11 sorogrupos diferentes. O sorovar dominante mais frequente, dentre os 12 identificados, foi o Icterohaemorrhagiae (6/16), seguido de Gryppotyphosa (4/16) e Pyrogenes (2/16). Didelphis albiventris, espécie mais abundante no estudo, apresentou uma prevalência de 35,9% (14/39) de anticorpos para Leptospira, enquanto S. villosus teve 0% (0/4) e M. coypus (1/1) e H. hidrochaeris (1/1) 100%. Dentre os Didelphis albiventris avaliados, houve maior frequência de reatividade sorológica à Leptospira interrogans, sorogrupos Icterohaemorrhagiae, com 35,71% (5/14) e Gryppotyphosa com 28,57% (4/14), indicando contaminação ambiental por tais leptospiras e a possibilidade de exposição e infecção de humanos e animais domésticos para tais bactérias na área estudada.
Leptospirosis is a potentially fatal zoonosis caused by Leptospira bacteria. Some animal host species are adapted to specific serovars being potential carriers and environmental dispersers. From 2009 to 2011, 45 wild mammals (39 opossums Didelphis albiventris, four porcupines Sphiggurus villosus, one coypu Myocastor coypus and one capybara Hidrochoerus hidrochaeris) found by citizens in anthropic areas of Monte Mor municipality were captured, contained and had sera samples collected for Leptospira antibody detection. The samples were titrated by the microagglutination technique (MAT) for different serogroups. A total of 35.56% (16/45) animals were reactive for Leptospira antibodies for 11 different serogroups. The most frequent serovar, among the 12 identified, was Icterohaemorrhagiae (6/16), followed by Gryppotyphosa (4/16) and Pyrogenes (2/16). Didelphis albiventris, the most abundant species in the study, had a prevalence of 35.9% (14/39) for Leptospira antibodies, while S. villosus had 0% (0/4), M. coypus (1/1) and H. hydrochaeris (1/1) 100%. Among the seropositive D. albiventris, 35.71% (5/14) and 28.57% (4/14) seroreacted for Leptospira interrogans species, serogroups Icterohaemorrhagiae and Gryppotyphosa respectively, indicating environmental contamination by these bacteria and the possibility of exposure and infection of humans and domestic animals in the studied area.
Leptospirosis is a potentially fatal zoonosis caused by Leptospira bacteria. Some animal host species are adapted to specific serovars being potential carriers and environmental dispersers. From 2009 to 2011, 45 wild mammals (39 opossums Didelphis albiventris, four porcupines Sphiggurus villosus, one coypu Myocastor coypus and one capybara Hidrochoerus hidrochaeris) found by citizens in anthropic areas of Monte Mor municipality were captured, contained and had sera samples collected for Leptospira antibody detection. The samples were titrated by the microagglutination technique (MAT) for different serogroups. A total of 35.56% (16/45) animals were reactive for Leptospira antibodies for 11 different serogroups. The most frequent serovar, among the 12 identified, was Icterohaemorrhagiae (6/16), followed by Gryppotyphosa (4/16) and Pyrogenes (2/16). Didelphis albiventris, the most abundant species in the study, had a prevalence of 35.9% (14/39) for Leptospira antibodies, while S. villosus had 0% (0/4), M. coypus (1/1) and H. hydrochaeris (1/1) 100%. Among the seropositive D. albiventris, 35.71% (5/14) and 28.57% (4/14) seroreacted for Leptospira interrogans species, serogroups Icterohaemorrhagiae and Gryppotyphosa respectively, indicating environmental contamination by these bacteria and the possibility of exposure and infection of humans and domestic animals in the studied area.
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Leptospirose, Gambá, sorologia, reservatório, região metropolitana de Campinas, Leptospirosis, Opossum, Serology, Reservoir, Campinas metropolitan region