Norovirus is the term for a family of about 50 strains of virus that all share one miserable endpoint: copious time in the bathroom. Every year, an estimated 684 million people globally come down with it.
Norovirus is a kind of infectious gastroenteritis, “an inflammation of the bowel and the colon that can cause diarrhea” and vomiting, explains Dr Ambreen Allana, an infectious disease physician based in Texas.