10/22/2021
For individuals who received a Pfizer-BioNTech or Moderna COVID-19 vaccine, the following groups are eligible for a booster shot at 6 months or more after their primary series:
65 years and older
Age 18+ who live in long-term care settings
Age 18+ who have underlying medical conditions
Age 18+ who work or live in high-risk settings
Note: The Moderna COVID-19 booster dose is half of the dose that is administered for the primary series dose.
For individuals who received the Johnson & Johnson COVID-19 vaccine, booster shots are also recommended for those who are 18 and older and who were vaccinated two or more months ago.
Based on studies Moderna seems to give the best antibody response when given as a booster for Pfizer or J&J