| putative human and avian risk factors for avian influenza virus infections in backyard poultry in egypt. | highly pathogenic influenza a virus subtype h5n1 causes significant poultry mortality in the six countries where it is endemic and can also infect humans. egypt has reported the third highest number of poultry outbreaks (n=1084) globally. the objective of this cross-sectional study was to identify putative risk factors for h5n1 infections in backyard poultry in 16 villages in damietta, el gharbia, fayoum, and menofia governorates from 2010-2012. cloacal and tracheal swabs and serum samples from ... | 2014 | 24315038 |