Swiss Cheese Approach to COVID Protection

By now, there are thousands of articles, advice columns, blogs, statements, journals and so on about how to protect yourself from COVID 19 (assuming you believe it is a big deal!).

This chart, however, I think best captures the steps you should take. It was designed by Ian M MacKay, a virologist. I discovered it when one of my fav writers, Zeynep Tufekci, used it on her blog (

Check out the high res version on Ian’s figshare.

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