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The RT-PCR test has a specificity of 95% and a sensitivity of 95%. Given that negative tests outweigh positive ones 50 times over, the number of false negatives is thus likely to be 50 times higher than the number of false positives. Sure, you can wave away five positives out of every 100, but there's another 250 unknown positives hiding away.
That's the wrong way round, as I've suggested twice before. Now that I've gone off and checked three times, I'm getting pretty confident of that!
https://en.wikipedia.org/wiki/False...tives#False_positive_and_false_negative_ratesThe false positive rate is the proportion of all negatives that still yield positive test outcomes
So - if FPR and FNR can be applied in this way, which I'm really not sure about - false positives would be 50 times higher than false negatives for your example, and only 0.1 unknown positives hiding away.
I doubt, when we are at the edge of the range, that doing such calcs gives us anything valid or useful. For one thing, we get a number via FPR that is much higher than the rate of positive test results seen during July.
Anyway, as I showed earlier, factoring in false positives to the test results actually makes the recent rise more extreme than otherwise, even when allowing for increased testing.