Why Aren’t Masks Free Yet?
Last week, the U.S. Centers for Disease Control and Prevention released the results of its testing of masks for preventing the spread of Covid-19: Any mask is better than none, and the tighter the fit, the better. With the spread of more contagious forms of the virus continuing, the CDC advised people to opt for high-quality masks like the N95, or double up on the cloth or disposable versions. Though the effectiveness of masks against Covid-19 is positive news in the middle of a crisis, the cost... Читать дальше...