https://www.cdc.gov/coronavirus/2019-ncov/vaccines/booster-shot.html#HighRisk
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Employees and residents at increased risk for COVID-19 exposure and transmission People aged 18–64 years at increased risk for COVID-19 exposure and transmission because of occupational or institutional setting may get a booster shot of Pfizer-BioNTech vaccine based on their individual benefits and risks. Adults aged 18–64 years who work or reside in certain settings (e.g., health care, schools, correctional facilities, homeless shelters) may be at increased risk of being exposed to COVID-19, which could be spreading where they work or reside. Since that risk can vary across settings and based on how much COVID-19 is spreading in a community, people aged 18–64 years who are at increased risk for COVID-19 exposure and transmission because of occupational or institutional setting may get a booster shot after considering their individual risks and benefits. This recommendation may change in the future as more data become available.
Examples of workers who may get Pfizer-BioNTech booster[ 1 ] shots
First responders (e.g., healthcare workers, firefighters, police, congregate care staff)
Education staff (e.g., teachers, support staff, daycare workers) Food and agriculture workers
Manufacturing workers
Corrections workers
U.S. Postal Service workers
Public transit workers
Grocery store workers
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