Third Dose/Booster Appointments

COVID-19 (Third Dose/Booster) Vaccine

Vaccine booster shots are available for those 18 years and older. If you received your second dose of the Pfizer or Moderna vaccine at least six months ago, you can now receive your booster. If you received your Johnson & Johnson vaccine at least two months ago, you can now receive your booster.

Please note, however, that some vaccine brands may not be available at all vaccination sites.

The Centers for Disease Control and Prevention (CDC) recommends that all Americans age 18 and over should get a booster shot.

In addition, people who are age 12 and older and who are moderately or severely immunocompromised are eligible for an additional (third) dose of an mRNA vaccine (Pfizer-BioNTech or Moderna) as part of their primary series. This means you do not have to wait six months for the third dose. This includes many people who are getting treatment for cancer, have had organ transplants, or receive treatments that weaken their immune systems. In addition, if you have received a bone marrow transplant or CAR-T therapy, you may need to repeat your vaccine series if you were vaccinated before receiving these treatments.

If you are 12 or over, you can register for a vaccine (first dose) appointment here. You may schedule appointments for vaccine at Mount Sinai South Nassau using this link only.

Everyone receiving a booster shot will need to bring their original vaccine card to the appointment.

The CDC is recommending that moderately to severely immunocompromised people receive an additional dose. This includes people who have:

  • Active treatment for solid tumor and hematologic malignancies
  • Receipt of solid-organ transplant and taking immunosuppressive therapy
  • Receipt of CAR-T-cell or hematopoietic stem cell transplant (within 2 years of transplantation or taking immunosuppression therapy)
  • Moderate or severe primary immunodeficiency (e.g., DiGeorge syndrome, Wiskott-Aldrich syndrome)
  • Advanced or untreated HIV infection
  • Active treatment with high-dose corticosteroids (i.e., ≥20mg prednisone or equivalent per day), alkylating agents, antimetabolites, transplant-related immunosuppressive drugs, cancer chemotherapeutic agents classified as severely immunosuppressive, tumor-necrosis (TNF) blockers, and other biologic agents that are immunosuppressive or immunomodulatory
  • Chronic medical conditions such as asplenia and chronic renal disease may be assiciatred with varying degrees of immune deficit
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