Most people with coronavirus won’t spread it. Why do a few infect many?
Carl Zimmer reports: At a May 30 birthday party in Texas, one man reportedly infected 18 friends and family with the coronavirus. Reading reports like these, you might think of the virus as a wildfire, instantly setting off epidemics wherever it goes. But other reports tell another story altogether. In Italy, for example, scientists looked at stored samples of wastewater for the earliest trace of the virus. Last week they reported that the virus was in Turin and Milan as…