Minnesota health officials are warning of an increase in norovirus cases amidst holiday gatherings. The Minnesota Department of Health on Monday said over 40 outbreaks of the stomach virus have been reported this month, which is almost twice the usual number.

Minnesota is facing a significant increase in norovirus outbreaks this December. The Minnesota Department of Health has reported over 40 outbreaks, nearly doubling the usual number. Norovirus is highly contagious and the leading cause of foodborne illnesses in the state.

Minnesota health officials are warning of an outbreak of a highly contagious illness: norovirus. The Minnesota Department of Health is reporting 40 outbreaks of norovirus, otherwise known as the stomach flu.