M Health Fairview said its hospitals are crowding due to what it called a "quad-demic," an influx of influenza, RSV, COVID-19 and norovirus cases.

A newer strain of norovirus, called GII.17[P17] makes up the majority of outbreaks nationwide, according to CDC data.The ...

Norovirus infections can occur at any time of year, but they tend to peak during the colder winter months—that happens every ...