• A colleague who sits next to me at the office has had one positive test and one negative LFT test in a day at a conference. What's the likelihood that the negative is the false rather than the positive? He's got back in the car and gone home from the conference but more concerned about whether I should be isolating (tested negative this morning already) given I was sitting next to him on Monday.

  • What's the likelihood that the negative is the false rather than the positive?

    Very high.

    Assuming you are vaccinated then self isolation following a close contact was ditched ages ago

  • I'm not in the UK anyway and its all "Don't ask don't tell" where I am, which is probably why, anecdotally, it's spreading like wildfire around workplaces and schools. I'll WfH for a couple of days and see how I go, I really don't like the idea of making other people sick.

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