Stomach Bug Going Around Colorado 2025. Colorado saw an uptick over the fall in similar bacterial infections that can cause diarrhea for several days to a. Norovirus, the highly contagious stomach bug that causes vomiting and diarrhea, is still spreading in the united states.

Also known as the stomach flu or winter vomiting bug, norovirus is. The stages of the stomach flu may vary in intensity and duration depending on factors like your overall health status, ongoing hydration efforts, and the virus that caused the symptoms.