The Science of Superspreaders

A fraction of infected people trigger the bulk of new cases, one reason the pandemic is far from over

Smithville, Texas, a town of 4,500 people an hour’s drive southeast of Austin, hasn’t yet been overly affected by Covid-19, the disease caused by SARS-CoV-2, the novel coronavirus. As of late May, the entire county of Bastrop has had about 200…