The Rosalia Virus is the antagonist in the game Trauma Team. During the course of the game, odd symptoms crop up in patients in the initial chapters, with symptoms such as severe hemorrhaging, vomiting blood, convulsions, cardiac arrest, unexplained tumor formation, and a unique, almost-claw shaped black bruise that forms over affected areas. The virus has the side effect of affecting the mental stability of its victims if it infects the nervous system, causing auditory and visual hallucinations. It turns into a deadly pandemic in the "Chapter Seven" portion of the game, which is focused on what caused it, how it spread, and how to stop it.