Some U.S. pharmacies and other vaccine providers are offering the new Covid-19 booster shot only from Pfizer Inc. and BioNTech SE, after a manufacturing-quality problem at a contract manufacturer caused a shortage of Moderna Inc.’s new booster shot.
In recent days, federal officials have advised state officials there is a limited supply of Moderna’s updated booster shots, said Marcus Plescia, chief medical officer of the Association of State and Territorial Health Officials.
