It seems like U of T students can’t catch a break! As if worrying about COVID-19 and the flu wasn’t enough, a new concern has emerged this season — the norovirus. This highly contagious stomach bug has been circulating worldwide, bringing along some unpleasant symptoms.

Symptoms and transmission

Norovirus symptoms typically appear 12 to 48 hours after exposure and include nausea, vomiting, diarrhea, and stomach pain. The infection can lead to gastroenteritis — inflammation and swelling of the stomach and intestines. While symptoms usually last between 24 to 72 hours, they can be like exam season at U of T: intense. 

As the norovirus spreads easily, students should take precautions to avoid it. The virus can be rapidly spread through direct contact, such as shaking hands with an infected person, touching contaminated surfaces, or consuming contaminated food. There is also evidence suggesting that airborne transmission may be a possible route. 

Speaking of contaminated foods, norovirus has been linked to the consumption of raw oysters, which can be avoided by ensuring that oysters are cooked to an internal temperature of 90 degrees Celsius. Beyond avoiding raw oysters, good hygiene offers plenty of other ways to protect yourself. 

How can you protect yourself?

Hand sanitizer alone is not effective at killing the norovirus. Instead, students are advised to wash their hands frequently with soap and water. 

Another interesting fact about the norovirus is that it can survive high temperatures up to 60 degrees Celsius, meaning it won’t simply disappear when the weather warms up. 

While the norovirus has no cure, it can be managed at home. If you’re experiencing symptoms, the City of Toronto recommends staying home for at least 48 hours after they cease. Be sure to drink plenty of fluids to prevent dehydration, and seek professional care if symptoms worsen or persist beyond 72 hours. 

Stay safe, U of T!