“A vast majority of Covid pneumonia patients I met had remarkably low oxygen saturations at triage — seemingly incompatible with life — but they were using their cellphones as we put them on monitors. Although breathing fast, they had relatively minimal apparent distress.” A remarkably interesting article from Dr. Richard Levitan in the NYT: The Infection That’s Silently Killing Coronavirus Patients. “There is a way we could identify more patients who have Covid pneumonia sooner and treat them more effectively … through a common medical device that can be purchased without a prescription at most pharmacies: a pulse oximeter.”