Estimating pediatric cases of COVID-19 over time in the United States: Filling in a gap in public use data

•Public use data have been valuable tools for surveillance during COVID-19.•Currently, pediatric case counts of COVID-19 over time are missing from these sources.•We estimated these cases using open data and built a tool for visualization of the data.•The tool can be found at https://surveillance.shinyapps.io/covid_agegroups.•These data support the need of emergency use authorization of vaccine for at least the 5-11year-old age group.