Aves silvestres como portadoras de agentes infecciosos para humanos no município de Goiânia - Goiás
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2011-04-27
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Universidade Federal de Goiás
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The narrowing between humans, domestic and wild animals has increased the dissemination of infectious agents for new hosts. The result of this interaction has lead to zoonosis. Among these animals are birds, which are natural reservoirs, carriers and disseminators of several infectious agents, potentially transmissible to humans. This dissemination can occur through direct and indirect contact with migratory birds originated from smuggling of wild animals. The objective was to detect viral, bacterial and fungal agents with zoonotic
potential in wild birds in the county of Goiânia, Goiás. It was carried out a systematic review to assess the State of Goiás in relation to the performance of wild birds as carries of infectious agents to humans. Blood samples and cloacal
swabs were collected from 88 different species of birds, as most of them were originated from smuggling and sent to CETAS-IBAMA in Goiânia in the first semester of 2010. The collects were analyzed in the Laboratory of Animal Virology at Federal University of Goiás (UFG) and the bacteriological and fungal analyses were done in the Laboratory of Microbiology at National Service of Industrial Education (SENAI) in Anápolis, Goiás. The blood was stored in tubes without anticoagulant in order to obtain serum and it was carried out a research with Enzyme-Linked Immunosorbent to search for the antibody of influenza virus and the cause of Newcastle disease. In order to isolate and identify filamentous fungus, Candida spp, bacteria, Salmonella sp and Escherichia coli,
samples were collected from cloacal excretion through swabs. In the systematic review, three articles were selected using two tests of Relevance. From the interpretation of these studies, it was proved the role of migratory birds as
carriers and disseminators in short and long distances of several pathogenic virus to humans. Furthermore, there are no records or even systematic studies about this process in the state of Goiás. From 88 analyzed samples, none of them presented antibodies for the two researched virus. The analysis of samples from cloacal swabs indicated a positivity of 9,1% for Candida tropicalis , 9,1% for Salmonella sp, 1,1% for Aspergillus fumigatus, 11,4% for Candida albicans, 12,5% for Candida krusei, 27,3% for Candida spp, and 43,2% for
Escherichia coli. The literature review suggests that further researches should be carried out as the distribution of this zoonosis can possibly be wider, even in the State of Goiás. Regarding the negative results for the viral agents, they
indicate that part of the wild birds in Goiânia-Goiás did not have contact with influenza and Newcastle viral antigens yet. Therefore they are not carriers of these photogenes. In relation to presumptive identifications of pathogenic
bacteria and fungal agents in wild birds, they confirm the possibility of transmission of these agents among animals and to humans. Besides, this study also reinforces that researches about zoonosis transmitted by wild birds in the state of Goiás are still recent and incipient, highlighting the need of continuation of these studies in the region.
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RAMOS, Talita Silva. Wild birds as carriers of infectious agents to humans in Goiania, Goias, Brazil. 2011. 151 f. Dissertação (Mestrado em Ciências da Saúde - Medicina) - Universidade Federal de Goiás, Goiânia, 2011.