The Centers for Disease Control and Prevention (CDC) says to stem the spread of COVID-19, all Americans should wear a mask.
The New York Times says if one mask works, maybe two will be twice as nice.
“Football coaches do it. President-elects do it. Even science-savvy senators do it. As cases of the coronavirus continue to surge on a global scale, some of the nation’s most prominent people have begun to double up on masks — a move that researchers say is increasingly being backed up by data,” the paper writes.
The Times cites Linsey Marr, an expert in virus transmission at Virginia Tech, who said “if you combine multiple layers, you start achieving pretty high efficiencies” of blocking viruses from exiting, and even entering, the nose or mouth.
Of course, there’s a drawback: “We run the risk of making it too hard to breathe.”
The CDC says COVID-19 spreads “mainly from person to person through respiratory droplets. Respiratory droplets