I have some questions:

1 - while it is not meaningful, I wonder if there are numbers on how many tests are done in the US (i.e. not just the confirmed cases)

2 - in other parts of the world, they are doing multiple tests to be sure. Depending on how someone swabbed and when during the infection, tests can come back negative for those infected. Is the US just doing 1 test and call it good? If multiple tests are done, how does that affect the "tests done" number?