WASHINGTON - People with certain health conditions that make them moderately or severely immunocompromised may receive a fourth COVID-19 vaccine dose, according to updated guidance from the U.S.
Centers for Disease Control and Prevention. Those who completed their primary series of an mRNA COVID-19 vaccine by either Pfizer-BioNTech or Moderna, and received an additional third mRNA dose, may receive a fourth dose at least six months later, the agency said.
In August, the U.S. authorized a third vaccination dose for American adults at high risk from COVID-19 because of severely weakened immune systems.
The Food and Drug Administration ruled that transplant recipients and other similarly immune-compromised patients can get a third dose of.