Suffolk County COVID-19 Vaccination Center

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The Centers for Disease Control and Prevention recommends that everyone 5 years of age and older receive a COVID-19 vaccination. The Pfizer vaccine is now authorized for everyone ages 5 and over. By getting vaccinated, you can end the damage to our economy, prevent more illnesses and deaths, and eliminate COVID-19.

See upcoming Suffolk County Vaccination Clinic times below including vaccine type, as well as eligibility and consent requirements. Appointments* are encouraged; walk-ins are welcome and will be accepted up to one-half hour before the clinic is scheduled to close. If you do not have an appointment, please expect a longer wait time.

Medical practitioners will be on-site at all times at each clinic. Contact 311 if you have questions about the clinics. To find a vaccination site nearest to you, text your zip code to 438829 or visit

*If you are looking for a 2nd booster dose, please do not schedule an appointment at this time. You may walk-in to any of our clinics to receive your 2nd booster dose. See below for eligibility requirements.

Third Doses & Booster Doses

According to the CDC, people who are moderately to severely immunocompromised sometimes do not build enough, or any, protection when they first receive a vaccination. This appears to be the case for some immunocompromised people and COVID-19 vaccines. When this happens, getting a third, additional dose of the vaccine can sometimes help them build more protection against the disease. In contrast, a “booster dose” refers to another dose of a vaccine that is given to someone who built enough protection after vaccination, but then that protection decreased over time (this is called waning immunity). Third doses and booster shots are available at all Suffolk County Vaccination Clinics. Please find more information on Third and Booster doses, below.

Third Doses

CDC recommends moderately to severely immunocompromised people consider receiving an additional (third) dose of an mRNA COVID-19 vaccine (Pfizer-BioNTech or Moderna) at least 28 days after the completion of the initial 2-dose mRNA COVID-19 vaccine series. Different medical conditions can result in widely varying degrees of immunosuppression. Your medical provider is best able to assess your status. For information on additional doses for some immunocompromised please see the statement available here.

Booster Doses

CDC and NYSDOH encourage all eligible New Yorkers to get COVID vaccine boosters to provide additional protection against new COVID variants. The following groups of people are eligible for boosters at this time:
  • Persons aged 12 or over who received their last dose of the Pfizer-BioNTech initial vaccine series at least 5 months ago
  • Persons aged 18 or over who received their last dose of the Moderna initial vaccine series at least 5 months ago
  • Persons aged 18 or over who received initial dose of the Janssen/ Johnson & Johnson vaccine at least 2 months ago

Some adults may choose to receive a second mRNA booster dose of either the Pfizer-BioNtech or Moderna vaccine. The second booster dose is approved for the following groups:

  • All adults ages 50 and older who received their last booster dose at least 4 months ago
  • Adults ages 18 – 49 who received the Janssen COVID-19 vaccine as both their primary series and booster dose, provided they received their last booster dose at least 4 months ago
  • Persons ages 12 and older who are moderately or severely immunocompromised, who received their last booster dose at least 4 months ago
People aged 16 or over who completed all of the recommended doses of a COVID-19 vaccine listed for emergency use by WHO but not approved or authorized by FDA are also eligible to receive a Pfizer-BioNTech booster at least 5 months after completion of their initial vaccine series. CDC’s guidance for booster doses can be found here.
If you are 18 or older, you may choose which COVID-19 vaccine you receive as a booster shot. Some people may prefer the vaccine type that they originally received, and others may prefer to get a different booster. CDC's recommendations now allow for this type of mix and match dosing for booster shots.
Visit for more information.

Vaccination for People Confined to Their Homes

If you are confined to your home for any reason, are 18 or older, and wish to get vaccinated, the Pfizer-BioNtech vaccine is available, safe and free. Please call 311 to schedule an appointment for a Suffolk County Public Health nurses to come to you. To find a vaccination site nearest to you, text your zip code to 438829 or visit

Updated Questions

Updated April 27, 2022. Source: CDC

Yes. While COVID-19 vaccines were developed rapidly, research and development on similar vaccines has been around for several decades. All three phases of clinical trials to ensure safety and efficacy were completed and hundreds of millions of people have been safely vaccinated with the current, available formulations of COVID-19 vaccine. COVID-19 vaccines are also continually monitored for safety and efficacy using vaccine safety monitoring systems. Learn more here.

Staying up to date with COVID-19 vaccinations significantly lowers your risk of serious illness, hospitalization, and death from COVID-19 infection. No vaccine is 100% effective and breakthrough infections can occur but are usually mild. Receiving the COVID-19 vaccine is your best chance at protecting yourself and others in this pandemic. Learn more about the reasons to get vaccinated against COVID-19.

Yes. Being vaccinated against COVID-19 provides added protection as vaccination has a more predictable immune response. The natural immunity levels from COVID-19 infection may not last as long depending on the severity of your illness. Unvaccinated individuals are more likely to get COVID-19 again than those who are vaccinated.
Source: CDC MMWR Report: Reduced Risk of Reinfection with SARS-COV-2 after COVID-19 Vaccination, Kentucky, May – June 2021

Yes. Staying up to date with your COVID-19 vaccines, including receiving a booster as soon as you are eligible, has been shown to offer excellent protection against hospitalization, severe illness, and death from COVID-19 variants.
Source: Johns Hopkins Medicine: COVID Variants: What you should know

Children and adolescents infected with COVID-19 can become seriously ill, require hospitalization, and in rare circumstances, die. Vaccinating eligible children can protect them from severe COVID-19 symptoms, prevent short and long-term complications of COVID-19, and allow for safe participation in group activities at school or daycare.
Source: CDC COVID-19 Vaccine FAQ for Children and Teens

Yes. Protection from the COVID-19 vaccine decreases over time (this is called waning immunity) and receiving recommended booster doses is recommended for all those eligible. See here for more on booster doses and third doses for immunocompromised persons.
Source: CDC – COVID-19 Vaccine Boosters

Yes, it is recommended to get a COVID-19 vaccine if you are pregnant, trying to get pregnant now or in the future, or breastfeeding. Individuals with COVID-19 are more likely to deliver a preterm (less than 37 weeks of age) or stillborn infant and may experience other pregnancy-related complications. Learn more here.
Source: CDC Vaccine FAQ

Yes. If you are experiencing symptoms and test positive for COVID-19, contact your healthcare provider right away to see if you are eligible for COVID-19 antiviral treatments. These medications are free but require a prescription. See here for more information.
Source: CDC’s Interim Clinical Considerations for use of COVID-19 Vaccines – Special Populations

Excelsior Pass is a secure, free, voluntary platform that provides digital proof of COVID-19 vaccination and negative COVID-19 test results. Excelsior Pass is available in more than 10 languages and includes proof of the individual’s primary vaccine series (although it does not provide proof of booster or additional doses). Excelsior Pass Plus includes proof of additional and booster doses in addition to proof of primary vaccine series. Click here to learn how to download and use the Excelsior Pass.

The Suffolk County Department of Health Services appreciates the support of Resolve to Save Lives, an initiative of Vital Strategies