Also, it's noteworthy that the tests mentioned in the article were of their poop. That's clearly apples and oranges vs a new infection. The valuable lesson there is clean ur fucking hands properly after taking a shit or you can make other people sick. But we kinda already knew that part. The fact that coronavirus can turn up in feces is the key lesson here, it just reiterates the need to wash hands.
Also Trump has best strategy for controlling coronavirus numbers:
President Trump, speaking at the Centers for Disease Control and Prevention in Atlanta, said he would have preferred not to let the passengers disembark onto American soil. “I don’t need to have the numbers double because of one ship that wasn’t our fault,”
It's not clear if he means letting them off the ship, and into land quarantine will double the spread, or he's concerned the
reported numbers may double. The "wasn't our fault" part is telling. His main concern is about being blamed.
At the moment, the news is saying the numbers for the ship are being reported separately to the US totals, so I suspect Trump
really is more concerned here about that than he is about treating the people on the ship. They're going to test everyone else on the ship, 3500 people, while about 20 are known to have it already. That may well double the number of known cases in the US, if they're allowed to be quarantined on American soil, because that's more than the number of tests carried out on the mainland up to recently.
My guess here is Trump was told this information in a briefing (the likely number of cases on the ship and how letting them off the ship would affect the numbers reported for USA), and then blabbed it outright to the news media, and meanwhile his aides are smacking themselves in their faces with their palms.