Booster/3rd Shot Information

Eligibility Information for COVID-19 Booster Shots and 3rd Doses for Immunocompromised Individuals.

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Maryland Vaccination Site Locater

Booster Shot FAQs

Picture of COVID-19 vaccine vials

Booster Shots

The FDA and CDC authorized booster shots of the Pfizer, Moderna, and Johnson & Johnson vaccines for all individuals age 18 and older. Please review the following information.

  • If you received the Johnson & Johnson vaccine, you are eligible for any vaccine booster shot, if you are 18 years of age or older, two months following your initial vaccination.
  • If you received the Pfizer or Moderna* vaccine, you are eligible for the booster shot if you are 18 years of age or older, six months after your final vaccination

(You may choose any vaccine booster no matter which original vaccine was received.)

Documentation of your previous vaccine series will be required. Either bring your vaccine card or verify your vaccine information has been accurately recorded in Immunet, the State of Maryland Immunization database. Individuals should talk to their healthcare provider about their specific situation and which vaccine is best for them.

Find more information about Booster Shots from the CDC hereBooster shots are also available from local pharmacies, retail stores, and/or your medical provider. Individuals who need assistance scheduling an appointment should call 410-313-6284.

3rd/4th doses for Immunocompromised Individuals

The Health Department continues to administer 3rd doses of mRNA (Pfizer and Moderna) vaccine to individuals considered moderately to severely immunocompromised at all Health Department-run clinics. Individuals should talk to their healthcare provider about their medical condition, and whether getting an additional dose is appropriate for them.

The CDC provides additional information about those individuals that may meet the criteria for immunocompromised here. Though no proof or doctor's note will be required at HCHD-run clinics, individuals will be asked to self-attest that they are immunocompromised and eligible for a 3rd vaccine dose. Please bring your vaccine card with you to verify the vaccine type you should receive.

Moderately and severely immunocompromised people aged ≥18 years who completed an mRNA COVID-19 vaccine primary series and received an additional mRNA vaccine dose may receive a single COVID-19 booster dose (Pfizer-BioNTech, Moderna, or Janssen) at least 6 months after completing their third mRNA vaccine dose. In such situations, people who are moderately and severely immunocompromised may receive a total of four COVID-19 vaccine doses. Click here for more information.

COVID-19 / Coronavirus

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