Rising Norovirus Cases in US and UK

Health officials in the United States and the United Kingdom are reporting rising cases of norovirus, the highly contagious virus known as winter vomiting disease, as the holiday season approaches. The surge has begun earlier than typical in the US, with activity detected since mid-October, while in the UK, laboratory-confirmed cases increased over the past two weeks but remain below seasonal norms.

In the US, the Centers for Disease Control and Prevention has tracked elevated norovirus levels through wastewater monitoring in states including California, Indiana, Louisiana, Michigan, Alabama, Florida, and Texas. Data indicate more than 150 outbreaks across at least 14 states by mid-November, surpassing patterns from previous years. The virus, which causes acute gastroenteritis, typically peaks between December and April but this season's early onset has heightened concerns in crowded settings such as schools, nursing homes, and communities. According to the National Foundation for Infectious Diseases, norovirus accounts for 19 to 21 million infections and approximately 900 deaths annually in the country.

Norovirus spreads easily through fecal-oral or vomitus-oral routes, often...