[Name] Heart virus [Source] Dragon Ball Z [Symptoms] 
Is a virus that affects one's heart, Goku acquired this virus from an unknown location and had to be bedridden for days. In an alternate time line Goku dies from this virus leaving the rest of Earth's special forces to be killed by androids 17 and 18, who were activated six months after Goku's death. Bulma creates a cure for this virus so that Trunks can take it back in time to save Goku and stop the androids.