U.S. COVID-19 booster shot campaign to start with only Pfizer - source

A White House plan to offer COVID-19 booster shots will most likely start this month only with the vaccine made by Pfizer Inc and BioNTech, a narrower initiative than anticipated, a source familiar with the matter said on Friday. President Joe Biden had expected to launch a campaign to administer 100 million booster shots on Sept. 20. But U.S. vaccine makers other than Pfizer have lagged in seeking authorization of an additional dose.