re: You’re not far enough away: It can travel 27 feet says MIT researcher

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I think it's more like it can travel 27ft max, not that it always does.

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Basically.

You need a certain number of viruses (infectious dose) to become sick.

If the average infectious dose is X, you’re not going to receive X viruses from someone 27 feet away from you unless you’re sharing breaths with them through a 27 foot long pipe.