Norovirus outbreaks have repeatedly shadowed major international events, and the Olympics are no exception. When thousands of athletes from around the world gather in one place, attention is usually on records broken and medals won. Yet the size and intensity of the Games can create conditions that allow infectious microbes to spread.
The outbreak at the 2026 Milan-Cortina Winter Games has already affected several teams, illustrating the real-world impact of such infections. Highly contagious and able to survive for days on surfaces, norovirus is one example of a pathogen that can move efficiently in these environments.
While norovirus outbreaks are often reported on cruise ships and in schools, global sporting events present additional challenges. Meals are served in centralized facilities, training and recreational spaces are shared and participants travel from countries around the world. In these environments, norovirus can spread rapidly through shared spaces and close contact.
