We were on Jewel of the Seas a few weeks ago and did not hear of anyone getting covid. There was one incident near our room that we never figured out. As we were going to eat two employees were knocking on a door near our room and no one answered. They finally used a master key to get in. When we came back there was a guard at the door and he stayed there for at least 24 hours and they had a cleaning cart there. Our hypothesis was that someone had covid and was too sick to answer the door but we never found out for sure.