Influenza Virus Type A
Flu Illness
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3.1 Types of influenza virus. 3.1.1 Influenzavirus A. 3.1.2 Influenzavirus B of vRNAs if more than one type of virus infects single cell. Influenza A virus subtype H5N1, also known as "bird flu," A(H5N1) or simply H5N1, of type A of subtype H5N1", is the causative agent of H5N1 flu, . .
