Feb. 10, 2023 — The number of positive cases of the norovirus, a highly transmissible gastrointestinal illness also known as the stomach flu, is rising across the United States.

There were 225 norovirus outbreaks reported to the CDC between Aug. 1, 2022, and Jan. 8, 2023, compared to 172 outbreaks during the same period the previous season, according to CDC data. 

The highest rate of positive tests is in the Midwest. 

“While norovirus cases are rising in the U.S., CDC data as recent as January 2023 show that reported norovirus outbreaks are within the expected range for this time of year,” CDC spokesperson Kate Grusich…


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