Superspreaders, clusters and dead ends: Research reveals more about how coronavirus spreads

Research from Arizona and beyond suggests the coronavirus that causes Covid-19 can spread erratically, making some infected people “superspreaders” and others dead ends for transmission. This can create clusters or “microhotspots” – neighborhoods, schools, towns or other small geographic areas where the virus runs rampant – even while communities next door remain relatively unscathed. These concentrated outbreaks aren’t included in the Arizona Department of Health Service’s Covid-19…