Anti-Virus Weapon Protocol No. 7600[note 1] was an order for the complete eradication of mutagenic viruses such as the t-Virus. The rule was put into action in order to avoid another incident like the Raccoon City Destruction Incident, which was always possible for as long as the t-Virus remained in existence.
It was in effect as early as 2002, with Leon S. Kennedy showing his then-partner Jack Krauser the order just before storming Hidalgo's main base of operations, which caused Krauser to become disillusioned, largely because they chose Leon over himself, a seasoned SOCOM operative, to eliminate bioweapons and other viruses, although he did not outwardly show this to Kennedy.
In localized versions of Darkside Chronicles and Degeneration, it was named "Anti-Virus Weapon Protocol Number 7600", which is a direct translation of its Japanese name (due to Japanese not allowing for shorthand words like "No.").