"All cruise ships carrying passengers in U.S. waters have recorded outbreaks of COVID-19 onboard, according to data from the Centers for Disease Control and Prevention.
All of the 92 cruise ships have reported enough cases to warrant an investigation. For cruise ships with passengers, this means 0.10% or more of passengers and one or more crew members have caught the virus or that the ship over a period of seven days did not report lab results to the CDC for a day or more.
The agency now advises even fully-vaccinated people to avoid cruises."
https://fortune.com/2022/01/07/cruises-covid-cases-all-trips-cdc-carnival-norwegian/
