The Science section of Tuesday’s Times had an explanation of how best to fight the pandemic which some experts have labeled “the Swiss Cheese Defense.” If you look at one slice of Swiss cheese, you can see through a number of holes. If you stack ten or twelve slices together you won’t be able to see through them.
To fight Covid 19 if you only wear a mask or if you only wash your hands, it won’t be enough. The experts divide the strategies into personal responsibilities and shared responsibilities. Personal responsibilities include physical distancing, staying at home if you are sick, washing your hands, avoiding touching your face, and limiting your time in crowds or stores.
Shared responsibilities would be installing air filters, staying outside, government messaging, financial support, quarantining, and ultimately, vaccines. You could do all of those things and still get the coronavirus, but it will be extremely unlikely.
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