(Capcom's primary storyline)
The 2002 South American incident was a viral outbreak which spread in the Amazon Rainforest. It was an intentional release of the t-Virus on the part of Javier Hidalgo, a local war-lord as an act of vengeance for the disappearance of his daughter and his tense relationship with the collapsing Umbrella Corporation. It was one of the earliest known implementations of Anti-Virus Weapon Protocol number 7600, an American policy of direct action against groups possessing the t-Virus. The South American incident is also the earliest known use of the Anti-Umbrella Pursuit and Investigation Team, a unit within USSOCOM that was founded as a dedicated anti-bioterror organization.
A number of Bio Organic Weapons and Zombified prisoners owned by the Sacred Snakes were released into the Amazonian wild and found their way towards nearby communities, spreading the t-Virus further. Along with the release, the Javier Dam was sabotaged in order to flood the towns along the river.
The Anti-Umbrella Pursuit and Investigation Team had obtained evidence that a rogue Umbrella employee was selling bio-weaponry to Javier Hidalgo immediately prior to the release. Sending in agent Leon S. Kennedy, with support from USSOCOM soldier Jack Krauser, the US government wanted the employee captured alive for questioning.
Javier Hidalgo had been a buyer of Umbrella's t-Virus samples since the 1990s, believing it to have the power to cure his wife Hilda of a degenerative condition. Though she ultimately transformed into an aquatic creature from the mutations, Javier continued onwards with buying Umbrella products - particularly B.O.W.s In the early 2000s he was contacted by Dr. Albert Wesker, who as a representative of Umbrella's rival company, began selling t-Veronica virus samples for use as a treatment for Javier's daughter, Manuela, who was also suffering the same degenerative condition.