(Covers information from the D.C. comics)
Raquel Fields was a member of the S.T.A.R.S. Charlie Team, serving as the team's munitions expert.
Raquel was a new recruit on the S.T.A.R.S. team when she was sent out to investigate Cristiana, Colorado on October 22nd of that year. She reported that there were no enemy contacts, unaware that a group of zombies were behind her. She was bitten and infected with the G-Virus, but kept her wound hidden from the others when formally introduced on October 31st, though she had no memory of being attacked during the investigation.
With information gathered from Nebraska, a section of Charlie Team travelled to Mexico in search of an Umbrella base, finding a small town to have been infested by the virus; conveniently during a Día de Muertos parade.