COVID-19 Update: Third Dose of Pfizer or Moderna Vaccine Available for Certain Immunocompromised Residents
Following the Food and Drug Administration (FDA) and Centers for Disease Control and Prevention (CDC) approval of an additional dose of the Pfizer and Moderna COVID-19 vaccines for immunocompromised people, Los Angeles County is now administering third doses to those who qualify.
The FDA has amended the Emergency Use Authorization for these vaccines to allow for a third dose which can be administered at least 28 days following the second dose of the vaccine.
Ideally individuals should be vaccinated with the same vaccine they received for the first and second dose, but if that is not possible, receiving a third dose with another mRNA vaccine is acceptable.
Although the Pfizer and Moderna vaccines work very well in the majority of individuals, there is evidence that individuals who are severely immunocompromised are not fully protected after receiving two doses and this small, vulnerable group may benefit from a third dose. Certain medical conditions or the treatments used for specific conditions may prevent the immune system from responding adequately to two doses of the vaccine and therefore require an additional dose to provide adequate protection from COVID-19. Individuals who qualify for a third dose include organ transplant recipients, people undergoing cancer treatment, people with advanced or untreated HIV and those on certain immunosuppressive medications.