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Pfizer requested emergency authorization for its Covid vaccine before FDA approval

Coronavirus disease (COVID-19) is an infectious disease caused by the SARS-CoV-2 virus. Most people infected with the virus will experience mild to moderate respiratory illness and recover without requiring special treatment. However, some will become seriously ill and require medical attention.

Pfizer has found itself drawn into a contentious political debate about how quickly regulators in the U.S. should allow a vaccine to be given to Americans. While U.S. President Donald Trump pushed to have a shot approved before Election Day, regulators put in place rigorous standards — including two months of safety data — that largely pushed that goal out of reach.