FDA authorizes second COVID-19 booster shot for adults aged 50 years or older

The FDA on Tuesday authorized a second booster dose of COVID-19 vaccine for people aged 50 years or older and certain immunocompromised patients, citing evidence that it improves protection against severe disease.
The authorization applies to the messenger RNA vaccines made by Pfizer-BioNTech and Moderna.
The FDA previously authorized a booster shot for older adults in September. They are now eligible for a fourth shot. Immunocompromised adults who received a recommended three-dose primary series of either vaccine have been eligible for a fourth dose since October and may now receive a fifth

The FDA on Tuesday authorized a second booster dose of COVID-19 vaccine for people aged 50 years or older and certain immunocompromised patients, citing evidence that it improves protection against severe disease.
The authorization applies to the messenger RNA vaccines made by Pfizer-BioNTech and Moderna.
The FDA previously authorized a booster shot for older adults in September. They are now eligible for a fourth shot. Immunocompromised adults who received a recommended three-dose primary series of either vaccine have been eligible for a fourth dose since October and may now receive a fifth