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What does the curve look like for coronavirus on a surface?

by eapache1 min read15th Apr 20202 comments

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Coronavirus
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There seem to be some pretty solid numbers on how long coronavirus will last on a given surface. But I’m curious what the curve looks like. Does it decay at a constant rate, like a radioactive substance? Or does it behave more like a group of animals denied food, where the population survives relatively intact for a while before hitting a point of rapid decay? I’m trying to evaluate the effectiveness of leaving things to sit for e.g. 24h if I can’t disinfect them and can’t wait the full recommended time.

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https://www.medrxiv.org/content/10.1101/2020.03.09.20033217v2.full.pdf

Specifically "Both viruses exhibited exponential decay in virus titer across all experimental conditions". See the graphs on the last page for different surface types.