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Initial Investigation of Transmission of COVID-19 Among Crew Members During Quarantine of a Cruise Ship — Yokohama, Japan, February 2020

The crew dining area was identified as the primary area of congregation for the crew; passengers did not have access to this part of the ship. The earliest laboratory-confirmed COVID-19 cases in crew members occurred in food service workers; 15 of the 20 confirmed cases in crew members occurred among food service workers who prepared food for other crew members and passengers, and 16 of the 20 cases occurred among persons with cabins on deck 3, the deck on which the food service workers lived (Table).

https://www.cdc.gov/mmwr/volumes/69/wr/mm6911e2.htm?s_cid=mm6911e2_w#T1_down

How COVID-19 Spread from Passengers to Crew Aboard Cruise Ship

The report shows that the group of crew members who were most hard-hit were the ship’s food service workers, as they were in close contact with patients and with utensils and plates used by the passengers. Out of 1068 crew members on board, a total of 20 crew members tested positive for COVID-19; of those, 15 were food service workers. In total, some 6% of the ship’s 245 food service workers came down with the illness.

https://www.contagionlive.com/news/how-covid19-spread-from-passengers-to-crew-aboard-cruise-ship