You're wrong again... sorry. There are several different 'flavours' of tests... some better than others. But even the worst ones (the 'flow' type I think, like a pregnancy test) are far more accurate than that. But the accuracy is each way... so some tests fail to pick up the virus and they can give a false positive. It's complicated I know...
And of course, the test merely shows the immediate 'as of now' situation... so it might show as being negative on a Monday, but by Tuesday amoron in a maskshopper in Lidl might have passed it on to you !
Absolutely. Tests for most diseases will result in a number of false positives and false negatives. There is no such thing as a perfect test. If you use your logic (selfmade) then testing for any disease is a waste of time.
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