Norovirus infections are surging across the United States this winter, according to data from the Centers for Disease Control and Prevention (CDC). Known as the “vomiting bug,” norovirus is highly contagious, spreading through contaminated surfaces, food, water, and close contact with infected individuals.
First identified in 1972, noroviruses are now known to cause about half of all non-bacterial diarrhea cases worldwide. Children under five, the elderly, and those with weakened immune systems are particularly vulnerable, often leading to outbreaks in daycare centers and senior facilities. Closed environments like cruise ships and large events are also at high risk, with past outbreaks recorded at the Athletic World Championships and on a cruise ship in Germany.
Symptoms, including vomiting and diarrhea, typically appear 6 to 50 hours after exposure to as few as 10 virus particles. Infections can linger, with the virus being shed for up to two weeks after symptoms resolve.
Treatment is limited to rehydration, particularly for vulnerable groups. Preventing infection involves rigorous hygiene, such as frequent handwashing, disinfecting surfaces, and safe food practices. While there is no vaccine or specific treatment, taking precautions like cooking vegetables, peeling fruits, and maintaining clean environments can significantly reduce risks.
Health officials urge caregivers to wear protective gear when assisting infected individuals and emphasize the importance of isolating patients to prevent further spread.
