Re: Dave, 06:44 – the article by Toby Young (eugenicist) is hopelessly out of date (September). Yes, a small false positive rate will yield many false positives if used to screen a population in which prevalence is low, but prevalence is now high.
The “issue” was raised by, ahem, Mike “there will be no second wave” Yeadon; I hope we’re all treating his pronouncements with appropriate scepticism these days.