The 2018 Winter Olympics have brought nearly 3,000 delegates from 206 countries together in PyeongChang, South Korea. But just a week after kicking off on February 8, the games and its attendees are already being interrupted by a fast-spreading norovirus outbreak.

Norovirus is an extremely infectious disease transmitted through food, water or by touching a contaminated surface. Infection causes inflammation of the stomach and intestines, which can lead to symptoms including stomach pains, nausea, vomiting and diarrhea.

In PyeongChang, there have already been 199 confirmed cases of norovirus — many of those sickened have been security guards hired for the games. Due to severe gastrointestinal symptoms, 41 guards have been hospitalized and more than 1,200 were placed in quarantine.  …