When 6 Feet Apart Is and Isn’t Enough

One of the standard pieces of advice for people trying to prevent the spread of COVID-19 is that we need to either stay 6 feet apart or wear masks. But does anyone really believe the danger zone is that sharply defined? Especially because study after study has shown that exhaled droplets, especially small, can travel larger distances than once thought.

At the same time, we know that ventilation matters, because it markedly affects the number of virus particles you might inhale if you are unfortunate enough to be exposed.

A new paper in BMJ (formerly the British Medical Journal) has addressed that topic in unusual detail, producing a very thorough (and easily read) graphic detailing the relative risk in a wide range of situations.

The result is good news for outdoor enthusiasts (such as runners, cyclists, and hikers), mixed news for outdoor gatherings, and bad news for bars and restaurants.

Nothing surprising there, but the graphic is cool, and useful.

Here’s the link to the study, in case the image above isn’t readable on your device. The image is a few pages down.

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