More than 100 passengers aboard the Ruby Princess cruise ship experienced a norovirus outbreak during a 20-day voyage that departed from San Francisco on June 12 and returned to port on Thursday. According to a spokesperson for Princess Cruises, the vessel underwent cleaning and disinfection ahead of its next scheduled departure later that day.

Health officials reported that 102 of the ship’s 3,032 passengers and 23 of the 1,144 crew members exhibited symptoms commonly associated with norovirus, primarily vomiting and diarrhea. The Centers for Disease Control and Prevention (CDC) confirmed the outbreak and noted that norovirus is highly contagious and a leading cause of gastrointestinal illness in the United States.

In response to the outbreak, the cruise line intensified cleaning protocols, isolated those affected, and collaborated with the CDC to manage sanitation efforts and case reporting. The spokesperson emphasized that the company followed recommended procedures to contain the spread of the virus and protect the health of passengers and crew.

Norovirus outbreaks are a known risk on cruise ships due to the close quarters and shared facilities, and both the cruise line and public health officials remain vigilant in addressing and preventing such incidents. The Ruby Princess has resumed operations after completing the necessary sanitation measures.