Forget corpses. Those lost in a disaster such as an earthquake or hurricane are killed by injury, not disease.The logic, reinforced by study after study, is simple: There is no relationship between terrestrial disasters and the breeding of viruses and bacteria. Forget corpses. Those lost in a disaster such as an earthquake or hurricane are killed by injury, not disease—and given the victims' inherent lack of circulation, so to speak, the colds a few might have had beforehand are even less likely to be spread than before. Yes, floods can give disease-carrying mosquitoes more room to breed. Tetanus can ride puncture wounds into the bodies of unimmunized victims. It is even possible that some of the displaced, if forced into close quarters, can spread an airborne ailment among themselves. But in order for such maladies to be a threat after a disaster strikes, they had to have been present before. That means the area in question was probably dealing with rampant malaria, tetanus, or tuberculosis already, and thus its people are probably somewhat prepared for, and even somewhat immune to, any potential uptick.