The number of norovirus cases is increasing across the US, but there are ways to reduce your chances of infection and stave off dehydration and other symptoms.

Norovirus cases are surging in the US, the CDC says. Here are the symptoms to look for, plus how long you're contagious for, per an infectious disease doctor.

Reported cases of norovirus — a brief, but miserable illness — have generally been rising across the country in recent months, according to national data, but people can help protect themselves by practicing good hygiene.