What Was Said -
'The Food and Drug Administration wrote in late 2020 that there was no data available to determine whether the vaccine would prevent transmission and for how long it would protect against transmission of the SARS-CoV-2 virus that causes COVID-19.

“At this time, data are not available to make a determination about how long the vaccine will provide protection, nor is there evidence that the vaccine prevents transmission of SARS-CoV-2 from person to person,” the agency specifically noted.

Meanwhile, Pfizer CEO Albert Bourla, around the same time, said his firm was “not certain” if those who receive its mRNA vaccine will be able to transmit COVID-19 to other people.

”I think this is something that needs to be examined. We are not certain about that right now,” Bourla told NBC News in December 2020 in response to a question about transmissibility.

Former White House medical adviser Dr. Deborah Birx in June revealed that there was evidence in December 2020 that individuals who received COVID-19 vaccines, including Pfizer’s, could still transmit the virus.'