States are doing more coronavirus testing thanks to a growing supply of rapid tests. But health officials are worried not all those results are being recorded.

All United States testing sites are legally required to report both positive and negative COVID-19 results to public health agencies. However, some sites are having trouble keeping up.

A doctor with the council of state territorial epidemiologists says schools are especially having trouble. Many don't have the proper tools to record that many results and are using slow paper-based methods.

Health officials are advocating for a more universal way to report rapid results.