Is it time to double-mask? How to up your masking game to protect against COVID-19 Updated Feb 10, 2021; Facebook Share As the coronavirus pandemic has played out, evidence has grown that masking is an easy, inexpensive and effective way to reduce transmission rates, experts say. In fact, Dr. Abraar Karan, a physician at Harvard Medical School, recently told CNN that if everybody wore an N95 mask for four weeks in “risky” indoor settings, it “would stop the pandemic.” That’s not possible right now: The global supply of N95 masks remains problematic enough that experts urge the gene...