A few people have correctly pointed out that theoretical tradeoff below could be different in longer term if no vaccine available. Given vaccine on horizon in UK, I focused on timescale of weeks because that will be a crucial period. But let's explore some broader scenarios... 1/https://twitter.com/AdamJKucharski/status/1343567425107881986 …
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Finally, suppose R=1.2. If we use a simple SIR model, we can calculate final epidemic size (F) by solving log(1-F) = R x F . So if R=1.2, this would mean 31% infected. If R=1.2x1.5 = 1.8 (i.e. 50% more transmissible), we'd expect 73% infected. 4/
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These are simple illustrative examples, but key point is that small differences in transmissibility are particularly important when we're near the epidemic threshold (i.e. R=1) - which is where many European countries currently are. 5/5
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