Dunkerton Community School District issued the following announcement on August 12.
Iowa Coronavirus Dashboard
Black Hawk County Coronavirus Information
https://www.bhcpublichealth.org/covid-19?utm_source=BlackHawkCOVID19.com&utm_campaign=Launch
COVID-19 Integrated County View
https://covid.cdc.gov/covid-data-tracker/#county-view
Original source can be found here.