COVID-19 vaccine starts working within two weeks after first shot

NHS England Starts Covid-19 Vaccination Campaign
Staff administer the Pfizer and BioNTech to people in the UK. | Photo by Victoria Jones / Pool / Getty Images

The Pfizer and BioNTech COVID-19 vaccine is safe, effective, and starts working within about two weeks of the first dose, according to documents published by the Food and Drug Administration today.

The materials are the first look at the vaccine data from the perspective of the FDA staff, rather than the drug companies. They were released ahead of the agency’s vaccine advisory committee meeting on December 10th. Like data released by Pfizer, the FDA’s briefing document shows that the vaccine is 95 percent effective at protecting against symptomatic COVID-19, and there are no serious safety concerns with the shot. It worked similarly for people in all racial and ethnic groups and of all ages in which it was tested. (There isn’t data…

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Author: Nicole Wetsman