CDC: Bird Flu in Animals and People – Causes and How It Spreads

WHAT TO KNOW Background Influenza A virus subtypes currently endemic in humans are H3N2 and H1N1 viruses. Examples of different influenza A virus subtypes currently endemic in animals include H1N1 and H3N2 in pigs (different strains than those found in humans), H3N8 in horses, H3N2 in dogs, and H5N1 in wild water birds and domestic […]