Twelve percent of nearly 3,000 norovirus tests during the week ending Nov. 22 came back positive — a notable increase from the 6.82% positivity rate three months earlier, according to CDC data. During the week ending Aug. 23, 6.82% of 4,034 norovirus ...

Outbreaks of the dreaded norovirus are slower than last season, according to the Centers for Disease Control and Prevention, but that doesn't mean much if you're the one suffering. Amid stomach bug season,

Norovirus cases have risen in the United States in recent weeks, according to data from the Centers for Disease Control and Prevention. Nearly 14% of tests for the illness came back positive during the week that ended on Nov. 15, according to CDC data.

If you're ill with the "stomach flu," you're not alone. Norovirus is surging across Arizona, is highly contagious and spreads rapidly.

And CDC data collected prior to January from states including Ohio shows that norovirus has already caused nearly 500 outbreaks across the country for the 2024-25 year. Start the day smarter. Get all the news you need in your inbox each morning.