Herman Mayfarth sends this extract from an article entitled “Universal Masking in Hospitals in the Covid-19 Era” in the New England Journal of Medicine: We know that wearing a mask outside health care facilities offers little, if any, protection from infection. Public health authorities define a significant exposure to Covid-19 as face-to-face contact within 6 feet with a patient with symptomatic Covid-19 that is sustained for at least a few minutes (and some say more than 10 minutes or even 30  minutes). The chance of catching Covid-19 from a passing interaction in a public space is therefore minimal. In many … Continue reading Masks: The Modern Rabbit’s Foot