Claim: A Pfizer executive has admitted the company did not test whether its Covid-19 vaccine stopped transmission of the virus before its launch.
Fact-check: Claims that Pfizer vaccine wasn't tested on preventing transmission need context - Full Fact
Verdict: pfizer was always clear it did not test whether the vaccines reduced the risk of transmission among already-infected individuals. but the trial did show the vaccines reduced infection risk in the first place, so reduced the risk of onward infection.
Organisation: Full Fact
Author: Tony Thompson
Date published: 2022-10-24T00:00:00