Why do some COVID-19 patients infect many others, whereas most don’t spread the virus at all?Kai Kupferschmidt, Science, May. 19, 2020
Most of the discussion around the spread of SARS-CoV-2 has concentrated on the average number of new infections caused by each patient. Without social distancing, this reproduction number (R) is about three. But in real life, some people infect many others and others don’t spread the disease at all.