The number of norovirus outbreaks in the United States has increased significantly, according to the Centers for Disease Control and Prevention (CDC). In the week ending December 5, 91 new outbreaks were reported, a 22% increase from the previous week in November. Norovirus is a highly contagious gastrointestinal illness that causes severe vomiting and diarrhea. Despite its severity, most cases of norovirus are self-limiting, meaning they resolve on their own without lasting consequences.
Source: https://www.washingtonpost.com/health/2024/12/30/why-are-norovirus-cases-rising