As the start of the 2018 Olympics nears, 86 Olympians are currently fighting a highly contagious norovirus, threatening their chances to compete.

On 3 Star Health, Dr. Surani explains how a norovirus is also well known as the "stomach bug", causing nausea and diarrhea. Anyone affected could be at high risk of dehydration. People in close contact with one another such as the Olympian camp could allow the virus to spread more quickly among participants.