an epizootic of equine influenza in upper egypt in 2000.this study describes an epizootic of respiratory tract disease caused by influenza virus infection in a large population of equines in luxor and aswan, upper egypt, during the winter of 2000. the epizootic started in january and the infection rate reached its peak in february before gradually decreasing until the end of april, 2000. horses, donkeys and mules of all ages and both sexes were affected. free movement of the infected equines and direct contact between the animals at markets facilitat ...200415861887
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