Norovirus Rates Are Increasing. Here's What To Know.

Key Points:

• Norovirus cases are rising across the U.S. as the virus typically spreads more easily during late fall and winter months when people spend more time indoors.
• The virus causes symptoms like nausea, vomiting, fever, and diarrhea, usually lasting one to three days, but severe cases may require medical attention due to dehydration or complications.
• Norovirus is highly contagious and can survive on surfaces for up to two weeks; proper handwashing with soap and water for at least 20 seconds is the most effective prevention method, as alcohol-based sanitizers do not kill the virus.
• Infected individuals should stay home while symptomatic and for two to three days after symptoms resolve to avoid spreading the virus, especially avoiding food preparation for others during this period.
• A new norovirus strain circulating since earlier this year may cause a more severe season, emphasizing the importance of hygiene and caution, particularly for children who are more susceptible to infection.