"Across the country, state by state, they were testing [for H1N1] until CDC told them not to bother. They were testing, in general, the cases most likely to be believed to have been swine flu based on a doctor's diagnosis of symptoms and risk factors such as travel to Mexico.
These special cases were going to state labs for absolute confirmation with the best test -- not the so-called "rapid testing," but the real confirmation test.
Of those presumed likely swine flu cases out of approximately every hundred of what was tested, only a small fraction were actually swine flu. In every instance, perhaps the biggest number of cases that were swine flu was something like 30%. The smallest number was something like 2% or 3%.
Maybe there's one state where it was just 1%.
The point is, of the vast majority of the presumed swine flu cases recognized by trained physicians, the vast majority were not flu at all. They weren't swine flu or regular flu; they were some other sort of upper respiratory infection."