Seroprevalence of H9N2 and H5 avian influenza in mixed-species poultry farms in Northern Benin.

Avian influenza is one of the major threats to poultry and human health in northern Benin, while mixed-species farming systems increase the risks of viral transmission. The present study estimated the seroprevalence of avian influenza subtypes H9N2 and H5 in indigenous chickens and guinea fowls in the Atacora and Donga regions. A total of 300 birds including 191 indigenous chickens and 109 guinea fowls, from six districts were sampled through a cross-sectional survey using systematic random sampling.