As the highly contagious omicron coronavirus variant spreads around the country, several states have mask mandates in place. Some social media users say they violate a set of research ethics dating ...
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How well do face masks protect against COVID-19?
The virus that causes COVID-19 spreads mainly through the air when a person coughs, sneezes, sings, talks or breathes. Virus particles can drift in the air and be inhaled, especially in crowded places ...
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