Tragedy as teacher

COVID-BlogMask, no mask. Social distancing: 3 feet, 6 feet, more? Outdoors, indoors, ventilated, air exchange, airborne transmission… and a whole range of factors to which we have become accustomed. If you are curious about the what, when, where and other interesting factors about the medical and scientific response to Covid-19, take a moment to read what I found to be a fascinating article about the evolving science behind covid-19 transmission.