Influenza A Virus, H7N1 Subtype

**Definition:** A subtype of INFLUENZA A VIRUS comprised of the surface proteins hemagglutinin 7 and neuraminidase 1. This subtype has demonstrated the ability to mutate from a low pathogenic form to a highly pathogenic form in birds. It was responsible for a 1999 outbreak in turkeys in Italy.

**Tree numbers:** - B04.820.480.968.405.400.690

**Synonyms:** - Avian Influenza A(H7N1) Virus - H7N1 - H7N1 Bird Flu Virus - H7N1 Influenza Virus - H7N1 subtype - H7N1 Virus - Influenza A(H7N1) Virus