An argument for *random* COVID-19 testing. Tesing is biased toward the sick & ill. So we don't know how much COVID-19 there is or how dangerous it is. This uncertainty => over and/or under reaction. We can't manage what we don't measure respresentatively. https://www.statnews.com/2020/03/17/a-fiasco-in-the-making-as-the-coronavirus-pandemic-takes-hold-we-are-making-decisions-without-reliable-data/ …
I don't think that's true - it teaches us a lot. What it doesn't give us is perfect information, but I think the reality is that we simply aren't going to have perfect information for some time yet
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What we care most about is prevalence and risk (morbidity/mortality). Testing people as they drive up to a tent indeed teaches us little about prevalence or risk, not to mention asymptomatic shedding and transmission. The errors are so large, we can't plan.
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I disagree wholeheartedly. With an infinite supply of testing and a perfectly happy population, perhaps, but in the real world we care most about identifying as many cases as possible in as short a space of time with limited testing facilities
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