The “stomach flu” isn’t really the flu at all. It’s actually viral gastroenteritis, and its most common cause is a group of viruses called noroviruses. No matter what you call it, the illness is highly contagious and very unpleasant — symptoms include abdominal pain, vomiting, and diarrhea. In close quarters, a norovirus outbreak can quickly [...]

Tags: CDC, cruise ship, norovirus