A norovirus that causes extreme vomiting is on the rise again.
Why it matters: Nicknamed the "winter vomiting disease," the highly contagious norovirus has arrived weeks ahead of expectations, per the CDC.
A norovirus that causes extreme vomiting is on the rise again.
Why it matters: Nicknamed the "winter vomiting disease," the highly contagious norovirus has arrived weeks ahead of expectations, per the CDC.