"Just past midnight last night, the director of the Centers for Disease Control and Prevention overruled a committee of independent advisers, allowing for use of a Pfizer/BioNTech vaccine booster dose in people with increased risk of occupational and institutional exposure to the pandemic coronavirus. That includes health care workers, front-line workers, teachers, day care providers, grocery store workers, and people who work or live in prisons and homeless shelters, among others. By taking the unusual move to overrule the ACIP's decisions, Walensky puts the booster efforts more in line with the Biden administration's preliminary plans to offer booster doses to all vaccinated adults, starting this week. Still, the current recommendations only apply to the Pfizer/BioNTech vaccine and those who received that vaccine for their two-dose "primary series." Those who initially received two doses of the Moderna COVID-19 vaccine or one shot of Johnson & Johnson's vaccine are advised to wait for further booster data and recommendations."

https://arstechnica.com/science/2021/09/cdc-director-overrules-experts-allows-pfizer-boosters-for-health-workers/