The CDC is investigating a norovirus outbreak aboard Princess Cruises' Ruby Princess after more than 120 passengers and crew members

A Princess Cruises cruise ship docked in San Francisco has seen an outbreak of norovirus, according to the U.S. Centers for Disease Control and Prevention. The CDC said that 102 out of the over 3,000 passengers onboard the Ruby Princess have been affected,

The CDC says the Ruby Princess outbreak involved vomiting and diarrhea during a 20-day Alaska and Canada cruise from San Francisco.

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