Abstract
Birds are increasingly close to men, and many times are raised as pets. However, many times, these animals may carry and spread enterobacteria that are deleterious to human health. Salmonella sp. is considered one of the most common zoonoses in the world, causing important losses to public health. Although, Escherichia coli is an important commensal in the gastrointestinal tract of most animals, it may cause disease both in men and animals, depending on the strain and its pathogenicity. Therefore, the objective of this study was to assess the occurrence of Salmonella sp. and Escherichia coli in free-living and captive wild birds in the city of Guarapuava, PR, Brazil. Animals were divided according to the taxonomic order, as follows: Columbiformes (228), Psittaciformes (128), Passeriformes (63), Piciformes (26), Falconiformes (19), Stringiformes (6), and Accipitriformes (01), in a total of 471 birds. Bacterial isolation was carried out by means of cloacal swabs, with 69.38% birds positive for E. coli and 22.32% for Salmonella sp. From the total of birds, 143 showed co-infection with Salmonella sp. and E. coli. Columbiformes showed the greatest occurrence of E. coli (82.33%). Falconiformes showed the greatest number of negative birds (57.9%). These results demonstrate that birds that were analyzed may carry and spread these enterobacteria, and preventive measures for human exposure should be determined, as these microorganisms are public health concerns. Key words: Escherichia coli, Salmonella sp., zoonosis.
Highlights
There are 1901 birds species in Brazil, according to the latest data of the CBRO - Brazilian Ornithological Records Committee (Bencke et al, 2010)
The objective of this study was to assess the occurrence of Salmonella sp. and Escherichia coli in freeliving and captive wild birds in the city of Guarapuava, PR, Brazil
Falconiformes showed the greatest number of negative birds (57.9%). These results demonstrate that birds that were analyzed may carry and spread these enterobacteria, and preventive measures for human exposure should be determined, as these microorganisms are public health concerns
Summary
There are 1901 birds species in Brazil, according to the latest data of the CBRO - Brazilian Ornithological Records Committee (Bencke et al, 2010). According to Sick (2001), pigeons are synanthropic birds that are found in large urban areas in Brazil. These birds make their nests in cliffs, and this is the probable reason for their adaptation to urban life, as there are high buildings. Other factors, such as feeding, abundance of shelter and absence of predators enable their disorderly development and reproduction. Given the close contact between these animals and men, zoonoses may occur in high rates.
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