One year ago today (Jan. 20), officials identified the first case of COVID-19 in the U.S. Since then, the country has tallied more than 24.2 million cases and more than 400,000 people have died of the virus.
The first known U.S. case involved a 35-year-old man who had traveled to Wuhan, China to visit family and returned to Washington State on Jan. 15, according to The New England Journal of Medicine. Four days after returning, he went to an urgent care clinic in Snohomish County with a cough and what felt like a fever. The clinic and the Washington Department of Health collected samples and notified the Centers for Disease Control and Prevention (CDC); the CDC confirmed he had COVID-19 a day later, on Jan. 20.