Information About the COVID-19 Vaccines

Getting vaccinated–including booster shots–is the best way to protect yourself, your loved ones, and your community from COVID-19. The mRNA vaccines made by Pfizer-BioNTech and Moderna require two shots, given about three to four weeks apart. For continued protection, you should then get a booster shot five months after the second dose.

The Centers for Disease Control (CDC) and Mount Sinai strongly recommend receiving an mRNA vaccine—Pfizer or Moderna—for both your initial doses and your booster. If, for whatever reason, it is not possible to receive one of the mRNA vaccines, the vaccine made by Johnson & Johnson (Janssen) is available and requires one initial shot. Anyone who receives the Johnson & Johnson vaccine should follow up with an mRNA booster two months later.

The Food and Drug Administration has granted full approval to the Pfizer-BioNTech COVID-19 vaccine for people ages 16 and older. Children ages 5 to 15 may receive the Pfizer-BioNTech vaccine under emergency use authorization (EUA). Also under EUA, the Moderna vaccine is available to those 17 and older, and the Johnson & Johnson vaccine is available to those 18 and older.

Five Things to Know About Vaccines - Updated 1/7/22

First Dose Appointment

Schedule your first vaccine dose appointment here.

To schedule a first dose appointment at Mount Sinai South Nassau, please visit the Mount Sinai South Nassau website or call 516-377-5333 for more information.

You can also check the New York State, New York City, New Jersey, or Connecticut websites for other locations that offer appointments or walk-in vaccination. New York City is also offering in-home vaccinations for all residents 12 and over, as well as mobile vaccination vans.

Patients ages 16 to 18 need parental/guardian consent for vaccination. Patients ages 5 to 15 must be accompanied by a parent or guardian.

Vaccination records from Mount Sinai are available through New York State’s digital app, Excelsior Pass.

Booster/Third Dose Appointment

The Centers for Disease Control and Prevention (CDC) says that all eligible Americans age 12 and over should get a booster shot. The following people are eligible:

  • Those 12 and older who received their second dose of the Pfizer/BioNTech vaccine at least five months ago
  • Those 18 and older who received their second dose of the Moderna vaccine at least five months ago
  • Those 18 and older who received their one dose of Johnson & Johnson vaccine at least two months ago

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

In addition, people who are age 5 and older and who are moderately or severely immunocompromised are eligible for an additional (third) dose of an mRNA vaccine (Pfizer-BioNTech for ages 5 and up; Moderna only if 18 or over) 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.

To schedule a booster shot or third dose of the Pfizer or Moderna vaccines, click here to make an appointment at Mount Sinai. You can also check the New York State, New York City, New Jersey, or Connecticut websites for other locations. For immunocompromised children ages 5-11, please contact their doctor’s office.

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

COVID-19 Vaccine Myths

There are a lot of myths on the internet about COVID-19 vaccines. Mount Sinai is working with a company called NewsGuard to provide the most accurate information. If you’ve heard something that sounds questionable and want to know if it’s true or not, you can look it up in NewsGuard’s report on the top COVID-19 vaccine myths.

Frequently Asked Questions about the COVID-19 Vaccine

Below are some helpful answers to the most frequently asked questions we receive about the COVID-19 vaccines.

In addition, a panel of Mount Sinai experts in infectious disease and clinical care have addressed some of the most common concerns about COVID-19 and vaccination in video roundtable discussions. They can be viewed here: