The FDA announced it had amended the emergency use authorizations for both the Moderna and Pfizer-BioNTech vaccines allowing for a single booster dose for all individuals 18 years of age and older after completion of primary vaccination with any of the approved COVID-19 vaccines.

The CDC also recommends that adults should get a booster at least six months after their last COVID-19 vaccine.

People who got the Pfizer or Moderna immunizations to start would be eligible for a booster six months after their second shot, the FDA said. People who got the Johnson & Johnson vaccine would be eligible for a booster two months after their first shot.

The booster shot is half of the dose of a primary series dose.

Prior to authorization, the FDA analyzed immune response data on clinical trial participants who had received both doses of either the Moderna or Pfizer vaccines. It found an antibody response against the SARS-CoV-2 virus 29 days after a Moderna booster dose and a month after the Pfizer booster. Both vaccines demonstrated a booster response, the FDA said.

Source:

https://www.fda.gov/news-events/press-announcements/coronavirus-covid-19-update-fda-takes-additional-actions-use-booster-dose-covid-19-vaccines

https://www.drugs.com/news/fda-grants-emergency-authorization-both-pfizer-moderna-boosters-all-adults-101782.html

Note: For informational purposes only. Consult your textbook for advising your patients.