Information on Additional Vaccine Doses (Booster Shots and Third Doses) in Montgomery County

Content verified October 29, 2021, courtesy of Montgomery County.

Eligible people

If you are eligible, you may choose any of the available COVID-19 vaccines as your booster. If you want a specific vaccine as your booster, check that your vaccination site has it available.

Booster Shot Eligibility
If you got this vaccine	Moderna or Pfizer series (2 shots)	Johnson & Johnson (1 shot)
When	Second shot at least 6 months ago	At least 2 months ago
In one of these groups	Age 65 and older Age 18 and older who live in long-term care settings, have underlying medical conditions, or work or live in high-risk settings	Age 18 and older
You may receive any one of these vaccines as your booster shot	Johnson & Johnson Moderna Pfizer

Available locations

See County-run clinics and vaccine types Use Maryland’s vaccine locator to find pharmacies and other providers. Your healthcare provider may have vaccine, too.

Items to bring to your appointment

Bring these items to your additional dose appointment

your vaccination card – see how to get a copy of your record
personal identification – see examples of identification

You will be required to self-certify underlying medical conditions and age.

You do not need a doctor’s note or medical history.

Are there risks of receiving an additional vaccine dose?

Limited information exists about the risks of receiving an additional dose of vaccine. Ongoing research is looking at the safety and benefit of additional doses of COVID-19 vaccines.

So far, reactions reported after a third dose of an mRNA vaccine were similar to those for first and second doses. The most common side effects reported have been fatigue and pain at the injection site. Overall, most side effects have been mild to moderate.