Novel and Variant Influenza A Viruses
Novel and variant influenza A viruses can infect and cause severe respiratory illness in humans. These influenza viruses are different from currently circulating human influenza A virus subtypes and include influenza viruses from predominantly avian and swine origin.
In recent years, human infections with highly pathogenic avian influenza A (H5N1, H7N3, and now H7N9), and variant influenza A (H3N2v and H1N2v) viruses have been reported.
Variant influenza A (H3N2v and H1N2v)
- Variant Flu (A H3N2v and H1N2v) Basics
General information about influenza A H3N2v and H1N2v, symptoms, transmission, minimizing your risk, and what to do if you get sick.
- Information for Exhibition Managers on Minimizing Influenza Transmission at Fairs and Swine Shows
Recommendations, guidance, consultation information, and free educational posters.
- About Novel Influenza A Virus (H7N9)