Document Detail

Chlamydophila psittaci and Toxoplasma gondii infection in pigeons (Columba livia) from São Paulo State, Brazil.
MedLine Citation:
PMID:  21055877     Owner:  NLM     Status:  In-Process    
Pigeons (Columba livia) cohabit with humans in urban and rural areas, representing a public health problem since microorganisms are transmitted through the inhalation of dust from their dry feces (chlamydiosis) and through ingestion of their undercooked or poorly refrigerated meat (toxoplasmosis). This study aimed to evaluate the presence of Chlamydophila psittaci and Toxoplasma gondii in pigeons from four cities in São Paulo State, Brazil. C. psittaci was evaluated through hemi-nested polymerase chain reaction (hnPCR) using cloacal and tracheal swabs, whereas T. gondii specific antibodies were assessed by means of modified agglutination test (MAT), mouse brain and muscle bioassay, and polymerase chain reaction (PCR). To confirm the infection in mice, T. gondii antibodies were assayed by using indirect fluorescent antibody test (IFAT). Considering C. psittaci, 40/238 (16.8%; 95%CI 12.6-22.1%) samples were positive according to hnPCR, especially for the cities of São Paulo (42.5%) and Bauru (35%). As regards T. gondii, 12/238 (5%; 95%CI 2.9-8.6%) serum samples were positive according to MAT. Of these, five samples had titer equal to 1:8; six samples, 1:16; and one sample, 1:32. Bioassay, IFAT and PCR were negative for mouse toxoplasmosis. The absence of T. gondii antibodies suggests that pigeons may be infected with a low concentration of the agent, not detected by the antigen test. Thus, C. psittaci represents an actual problem concerning bird health.
Vanessa Yuri de Lima; Helio Langoni; Aristeu Vieira da Silva; Sandia Bergamaschi Pezerico; André Peres Barbosa de Castro; Rodrigo Costa da Silva; João Pessoa Araújo
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Publication Detail:
Type:  Journal Article     Date:  2010-10-14
Journal Detail:
Title:  Veterinary parasitology     Volume:  175     ISSN:  1873-2550     ISO Abbreviation:  Vet. Parasitol.     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-11-29     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7602745     Medline TA:  Vet Parasitol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  9-14     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier B.V. All rights reserved.
School of Veterinary Medicine, Pontifical Catholic University, Toledo, Paraná State, Brazil.
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