With norovirus cases surging across the U.S. this winter, it seems like everyone knows someone who’s been affected. This highly contagious virus is notorious for causing acute gastroenteritis, but there’s much more to it than just a rough couple of days.
Dr. Paul Sax, MD shares key highlights about norovirus that might surprise you:
Norovirus is the leading cause of acute gastroenteritis worldwide, thriving especially in winter. It was first identified after a 1968 outbreak in Norwalk, Ohio—hence the name. The virus spreads rapidly in places like cruise ships, daycare centers, and nursing homes, making it the nemesis of close-contact environments.
What makes it challenging? Its incubation period is 24–48 hours, it can survive on surfaces for weeks, and is resistant to alcohol-based sanitizers—yes, even that trusty hand gel isn’t enough. Surprisingly, people can shed the virus for weeks even after recovery, and a tiny amount is enough to infect others.
While there’s no antiviral treatment, supportive care like hydration is key. Prevention strategies include frequent handwashing, disinfecting surfaces, and isolating symptomatic individuals. Though a vaccine isn’t available yet, research is ongoing.
