ANTHONY J. WALLACE Cronkite News PHOENIX â Research from Arizona and beyond suggests the coronavirus that causes COVID-19 can spread erratically, making some infected people âsuperspreadersâ and others dead ends for transmission. This can create clusters or âmicro-hotspotsâ â neighborhoods, schools, towns or other small geographic areas where the virus runs rampant â even while communities next door remain relatively unscathed. These concentrated outbreaks arenât included in the Arizona Department of Health Serviceâs COVID-19 data dashboard, which breaks down cases by county. Dr. Peter Plantes, an internal medicine specialist, works with hc1, a health care data analysis company that recently launched a COVID-19 dashboard explaining the dynamics of the pandemic in new detail.