AdvertisementCDC backs expansion of COVID boosters for all adultsUpdated November 19, 2021Scott HensleyfacebookEmailSafeway pharmacist Shahrzad Khoobyari administers a Pfizer-BioNTech COVID-19 booster shot into the arm of Norman Solomon in San Rafael, Calif., in October. (Getty Images)This article was originally published on November 19, 2021.