Novel and Variant Influenza A Viruses
Flu viruses constantly change and mutate. 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.
- Current: Novel Influenza A Virus (H7N9)
In recent years, human infections with highly pathogenic influenza A (H1N1, H5N1, H7N3, and now H7N9), and variant influenza A (H3N2v and H1N2v) viruses have been reported.
Novel Influenza A (H1N1, H5N1, H7N9)
- Novel Influenza A (H1N1, H5N1, H7N9)
New (novel) influenza A viruses have the potential to cause a pandemic if the virus were to change to become easily and sustainably spread from person-to-person.
About Novel Influenza A Virus (H7N9) | Novel Flu For Health Professionals | 2009 A (H1N1)pdm09 | 2011 H5N1
Variant Influenza A (H3N2v and H1N2v)
- Variant Influenza A (H3N2v, H1N2v)
Variant influenza A H3N2 virus does not usually infect people but occur in pigs, and are very different from human seasonal H3N2 viruses. Similarly, the variant influenza A H1N2 virus strain is different from the human seasonal H1N2 virus.
About Variant Flu A (H3N2v and H1N2v) | For Exhibition Managers (Fairs and Shows) | Variant Flu For Health Professionals