The stomach flu or viral gastroenteritis may last a few days or week. Here are the stages of stomach bugs and how to get well.

A new COVID variant called "Nimbus" is spreading. Here's what you need to know about the incubation period, symptoms (including "razor blade throat") and when to take a test.

Greenwood1 studied an idealized model, having a fixed incubation period and point-infectivity. He showed that a single primary case in a small family group of susceptibles would lead to a chain of ...