26 October 2021. ABC News: Immunocompromised people may need a fourth dose of the vaccine, according to newly issued guidance from the U.S. Centers for Disease Control and Prevention.
Those patients may end up needing an additional shot six months after their third dose of the Moderna or Pfizer vaccines, the CDC said. The fourth dose can be of any of the three available vaccines, according to the agency.
This is in line with what the CDC has said before regarding immunocompromised adults. A third shot is considered necessary to establish vaccination for those patients and a boost would need to come six months later, according to the agency.