Influenza Virus

Influenza virus (インフルエンザウイルス) 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.

Appearance
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.

Personality
The Influenza act in a typical mindless zombie fashion.

Background
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.

History
A Type B Influenza virus infects numerous of Normal Cells and were initially dealt with by U-1146 and Macrophage. Upon evolving, Effector T Cell also deals with them too.