Influenza A (H1N1) Virus

**Semantic type:** Virus

**Definition:** A strain of swine influenza A virus identified as the causative agent of the swine flu epidemic of Spring 2009. It is highly contagious and susceptible to the antiviral medications.

**Synonyms:** - INFLUENZA A VIRUS SUBTYPE H1N1 - Influenza A Virus H1N1 Subtype - Influenza A/H1N1pdm09 - Swine Influenza A (H1N1) Virus - Swine-origin influenza A (H1N1) virus