Framing Analysis
A norovirus outbreak sickened 102 passengers and 23 crew members aboard the Ruby Princess during a 20-day voyage from San Francisco to Canada and Alaska. The ship, operated by Princess Cruises with 3,032 passengers and 1,144 crew, docked in San Francisco on Thursday after the outbreak was reported to the CDC on Saturday. Seven similar outbreaks have occurred on cruise ships under CDC jurisdiction this year.