@richgregory @balajis Also, the 28 day rule, though very questionable, wasn't far off in the first year or two when deaths were highest. Not that many people die in car crashes at all (<2k/yr in UK), and it would only matter for the subset that happen to coincide with a positive test. Small numbers.
@richgregory @balajis 此外，28 天规则虽然非常值得商榷，但在死亡人数最多的第一年或两年内并不遥远。根本没有多少人死于车祸（