In November 2019 when all those "Plague ship" stories were circulating my brother-in-law's friend came back from Italy after visiting his family and he had the virus, my brother in law got it and was hospitalized but because of all the lies/misinformation/lack of information the doctors could not figure out what was wrong with him. He did recover and he thinks that their last ditch effort to save him assuming it was Valley fever and giving him an anti-fungal medicine while they were waiting for the test to come back to confirm that saved him. (I don't think that makes sense, I think it was him being forced to stay in bed and oxygen that helped him recover) The test came back negative for valley fever and all types of flu and other virus that they had tests for.
Later, after he had recovered the doctor called him and said she believed he had covid 19. Now he is in the hospital again with the Delta variant 19 months after his first hospital stay. This time they know what it is and are treating him with anti-virals.
I remember the news about the U.S. passengers on those ships being allowed to fly home in November and December, while other countries insisted their citizens isolate in what ever country that would take them. That was the first red flag that the Trump administration was handling this thing badly. There were no precautions for those people, and they probably helped spread the virus all over the world before they got home and spread it in the U.S.