Surveillance of arbovirus infections in the atlantic forest region, State of São Paulo, Brazil: I. detection of hemagglutination-inhibition antibodies in wild birds between 1978 and 1990

Revista do Instituto de Medicina Tropical de São Paulo

Ivani B. Ferreira²  Luiz E. Pereira²  Iray M. Rocco²  Antonia T. Marti²  Luiza T. M. De Souza²  Lygia B. Iversson¹ 

[1] ,Adolfo Lutz Institute Section of Arthropod-Transmitted Viruses São Paulo SP ,Brazil

关键词: Arbovirus;    Ecology;    Hosts;    Hemagglutination-inhibiting antibodies;   

DOI  :  10.1590/S0036-46651994000300011

来源: SciELO

【 摘 要 】

We report data related to arbovirus antibodies detected in wild birds periodically captured from January 1978 to December 1990 in the counties of Salesópolis (Casa Grande Station), Itapetininga and Ribeira Valley, considering the different capture environments. Plasmas were examined using hemagglutination-inhibition (HI) tests. Only monotypic reactions were considered, except for two heterotypic reactions in which a significant difference in titer was observed for a determined virus of the same antigenic group. Among a total of 39,911 birds, 269 birds (0.7%) belonging to 66 species and 22 families were found to have a monotypic reaction for Eastern equine encephalitis (EEE), Venezuelan equine encephalitis (VEE), Western equine encephalitis (WEE), Ilheus (ILH), Rocio (ROC), St. Louis encephalitis (SLE), SP An 71686, or Caraparu (CAR) viruses. Analysis of the data provided information of epidemiologic interest with respect to these agents. Birds with positive serology were distributed among different habitats, with a predominance of unforested habitats. The greatest diversity of positive reactions was observed among species which concentrate in culture fields.

【 授权许可】

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