Avian Influenza Type A Virus Antigen
There are four types of influenza (flu) viruses: A, B, C, and D. Wild waterfowl, including gulls, terns, and shorebirds, and wild waterfowl, such as ducks, geese, and swans, are considered reservoirs (hosts) of birds. influenza A virus. Influenza A virus subtypes Influenza A viruses are divided into subtypes based on two proteins on the…









