PMID(sorted ascending)
influenza a viruses isolated from waterfowl in two wildlife management areas of pennsylvania.a survey was conducted at two wildlife management areas of pennsylvania (usa) to evaluate an antigen capture enzyme-linked immunosorbent assay (ac-elisa) for the detection of avian influenza viruses (aiv) in cloacal swabs from waterfowl and to determine the influenza a virus subtypes and the distribution of these viruses among waterfowl. we collected 330 cloacal swabs from hunter-killed waterfowl in the fall of 1990 and from cage-captured waterfowl in the summer of 1991. thirty-one hemagglutinat ...19958583635
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