“Is It Time That We All Start Wearing Masks?” Medscape, 1 Apr. 2020, www.medscape.com/viewarticle/927890Thanks to Chris, our Marler Clark nurse, for this post:  Attached is a Medscape article from 4/1/2020:
IS IT TIME THAT WE ALL START WEARING MASKS

Here are some excerpts from the article:

“Data on efficacy of masks are scant, though evidence does suggest that masks reduce personal risk. The mode of transmission of high-attack-rate, fast-moving epidemics has been determined to be from respiratory droplets. Unless a cough is directly into the face of someone else, droplets and virus spread by that cough fall and then hang out on the surfaces on which they land. In public spaces, the sneeze/cough scenario with another individual in close range is all too possible.”

“Respiratory droplets have diameters in the range of 10 to 100 µm. The research studies looking at transmission have been about influenza, but the COVID-19 mechanism of spread is analogous.”

“One study that examined the capacity for a range of types of cloth masks to filter particulate matter of 10 μm or less (PM10) found that four different types had filtering efficiency that ranged from 63% to 84%. Mind you, we care most about a diameter over PM10. But even for this very small droplet size, these masks filtered better than nothing. As the SARS-CoV-2 virus lives on surfaces for hours to weeks, stopping the particles from landing on grocery aisles or other surfaces touched by multiple persons is even more critical.”

“Wearing masks in public isn’t a panacea. Physical distancing is critical and we know that cities that distanced in the 1918 flu pandemic had later and lower death rates. We know that handwashing gets the particles off your hands and away from the portals in your face. And if we read the research and look at the numbers honestly, we must also recognize that masks keep us safe.”

“Stay home. Wash your hands. Watch the video from the Minister of Health of the Czech Republic. And from now until the time that we can congregate at weddings, graduations, and parties without fear, when you must leave your house, universally, please wear a mask.”