Got home to find a letter saying I've been randomly chosen to take part in an NHS periodic study - if I agree to participate they'll send me a Covid test kit, by testing several thousand people at intervals they'll get an idea of how it's spreading (if it still is). The down side of course is having to self-isolate if the test shows I have the virus, even if there are no symptoms. I think I'll join in, I think I'm better off knowing.
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