The CDC warns that outbreaks of norovirus are on the rise in 14 states. According to the CDC, between Aug. 1, 2022 and Jan. 8, 2023, there were 225 norovirus outbreaks reported to the CDC, compared to 172 outbreaks during the same period the previous season. Norovirus is a very contagious virus that causes vomiting and diarrhea. People of all ages can get infected and sick with norovirus. Norovirus is sometimes called the stomach flu or stomach bug. However, norovirus illness is not related to the flu which is caused by influenza virus. People with norovirus illness can shed billions of norovirus particles. And only a few virus particles can make other people sick.
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