The Food and Drug Administration announced Thursday that it has approved a third dose of the coronavirus vaccine for immunocompromised people.
The Food and Drug Administration is poised to amend the emergency use authorizations for the Pfizer and Moderna Covid-19 vaccines Thursday to allow people with compromised immune systems to get a third dose, two sources familiar with the plans.
The move would come after a panel of advisors to the Centers for Disease Control and Prevention met in July and urged action on extra doses for immunocompromised adults.
Doctors say it is increasingly clear that many such patients are still vulnerable to Covid-19 following vaccination because they may not mount an effective immune response to the shots.
An estimated 2.7 percent of adults in the United States are immune-compromised, according to the CDC. It is unclear which groups would be covered under the expected FDA action. Immune-compromised patients include organ transplant recipients, people undergoing cancer treatment and people with HIV, among others.
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