I am not an expert on PCR. That said, his idea is plausible. PCR amplification is tremendous as far as I know. Hence, it is possible that PCR results get misread as having a (repeat) infection instead of having beaten an infection. If he is right, it is good news - maybe I get to go and see my niece and nephew this fall.
The thing is: how often PCR test is used? I don't know.
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