At the time of the CDC's March report, cruise passengers accounted for about 17% of the reported US Covid cases. For much of the crisis, cruise ship crew had been largely silent, prohibited from speaking out by their contracts. These travelers were subsequently granted the surreal status of becoming the last cruise ship passengers at sea. Related content Huge empty 'ghost' cruise ships lure touristsAugust 16, 2020: The returnThe MSC Grandiosa is one of the first cruise ships to return to the sea. On November 24, the CDC upped its warning on cruise ships, advising that "all people" should avoid traveling on them.

Source: CNN December 29, 2020 09:56 UTC