The CDC says a new strain of norovirus now makes up a majority of outbreaks and that could be why it's spreading so quickly. Stephanie Stahl reports.

New data from the Centers for Disease Control and Prevention (CDC) has found that cases of norovirus, the very contagious stomach bug, are on the rise acro

Outbreaks of the highly contagious stomach virus are more than double what they were last year at the time, CDC says. Protect yourself by washing hands with soap often — antibacterial gel doesn't work well against the virus.