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Influenza Viruses

H Subtypes Subclades H5N1 Characteristics H5N5 Characteristics H5N5 vs H5N1 A(H3N2) Subtype

Washington Reports First Human H5N5 Bird Flu Case Following Patient’s Death

Health officials point to likely exposure from a backyard poultry flock, with the overall risk to the public considered low.

Washington Confirms First Human H5N5 Bird-Flu Case as CDC Maintains Low Public Risk