What does emergency use of a COVID-19 vaccine mean?
It’s when regulators allow shots to be given to certain people while studies of safety and effectiveness are ongoing.
Before any vaccine is permitted in the U.S., it must be reviewed by the Food and Drug Administration, which requires study in thousands of people. Normally, the process to approve a new vaccine can take about a decade. But the federal government is using various methods to dramatically speed up the process for COVID-19…
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