Note: Leading into the holiday season, transmission of COVID-19 is highest in Nevada, Arizona, New York, and Colorado. The data shown here reflect the most current estimates of the effective reproduction rate. Estimates can only be made for the recent past because they are based in part on current reported cases, which reflect infections 11-13 days prior. Leading into the holiday season, transmission of COVID-19 is highest in Nevada, Arizona, New York, and Colorado. For the latest, visit http://www.healthdata.org/covid/updates
