A bicyclist rides down an empty Pennsylvania Avenue in Washington DC with the Capitol Building in the background. The area has been mostly shut down with restrictions around the COVID-19 virus restrictions.

Coronavirus disease 2019 (COVID-19) is an infectious disease caused by severe acute respiratory syndrome coronavirus 2. The disease was first identified in December 2019 in Wuhan, the capital of China's Hubei province, and has since spread globally, resulting in the ongoing coronavirus pandemic.