man in white dress shirt wearing black sunglasses

This Centers for Disease Control and Prevention (CDC) scientist was unpacking testing kits for real-time reverse transcription-polymerase chain reaction (RT-PCR) analysis of SARS-CoV-2 specimens. Millions of these test kits have been processed in the United States since February 2020, when the FDA first granted emergency use authorization for a test for SARS-CoV-2, the virus that causes COVID-19.