How Mask Guidelines Have Evolved in a Pandemic Year
Officials offered mixed messages about masks in the early days of the coronavirus pandemic before embracing them as a simple but effective tool for slowing the spread of Covid-19.
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Officials offered mixed messages about masks in the early days of the coronavirus pandemic before embracing them as a simple but effective tool for slowing the spread of Covid-19.
by · Published January 1, 1970
by · Published April 29, 2021
by · Published May 12, 2021