|ANIME DEBUT||Episode 3|
|MANGA DEBUT||Chapter 3|
Influenza virus (インフルエンザウイルス Infuruenza Uirusu?) is the cause of influenza. In virus classification, influenza viruses are RNA viruses that make up four of the seven genera of the family Orthomyxoviridae.
An influenza virion is depicted as a red ball with grey surface protein-like structures sticking out. When a cell is infected, it turns into a zombie with green skin, and a virion latches onto its head like a cap.
The Influenza act in a typical mindless zombie fashion.
There are three types of Influenza Viruses A, B, and C; A being he worst of them as it could easily reach epidemic levels, if not dealt with immediately.