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Surveillance for Influenza Viruses in Poultry and Swine, West Africa, 2006–2008
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Sep 2012
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Source: Emerg Infect Dis. 18(9):1446-1452.
[PDF-258.05 KB]
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Alternative Title:Emerg Infect Dis
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Description:To determine the extent of animal influenza virus circulation in Côte d'Ivoire, Benin, and Togo, we initiated systematic year-round active influenza surveillance in backyard birds (predominantly chickens, guinea fowl, and ducks) and pigs. A total of 26,746 swab specimens were screened by using reverse transcription PCR. Animal influenza prevalence was estimated at 0 (95% CIs for each of the 2 study years 0-0.04% to 0-1.48% [birds] and 0-0.28% to 0-5% [pigs]). In addition, 2,276 serum samples from the same populations were negative for influenza-specific antibodies. These data indicate that the environments and host populations previously identified as harboring high levels of influenza virus in Southeast Asia do not do so in these 3 countries. The combination of climate and animal density factors might be responsible for what appears to be the absence of influenza virus in the backyard sector of the 3 countries.
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