COVID-19 Update: Additional Doses and Boosters

covid-19 response

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AUG. 24, 2021

Additional Vaccine Dose Available for Certain Immunocompromised Individuals

Arlington County Public Health is now offering an additional (or third) dose of mRNA COVID-19 vaccines (Moderna and Pfizer) to certain immunocompromised people at its Arlington Mill and Walter Reed clinics. Learn more

Update on Booster Doses

Once approved for the general public, Arlington County will coordinate with the Virginia Department of Health to administer booster doses, with distribution expected to start in late September. People 18 years or older who received two doses of the Pfizer-BioNTech or Moderna vaccine will be eligible to get a booster at least eight months after they received their second dose. More information will be available in the coming weeks. In the meantime, visit the County website for FAQ on boosters.

WATCH: Updates on Boosters and Additional Doses

Hannah is here to answer some of your questions about additional COVID-19 vaccines and booster doses.

  • What is the difference between an “additional dose” and a “booster dose”?
  • Who is eligible for an additional dose of COVID-19 vaccine?
  • When will booster doses be available for the general public? 
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VDH Updates Cases by Vaccination Status Dashboard

The Virginia Department of Health updated its COVID-19 Cases by Vaccination Status dashboard to more accurately represent the impact of vaccinations on infection rates in the Commonwealth. Between January 17 and August 14, 2021, 252,938 people developed COVID-19 symptoms or tested positive. Almost all of these were among unvaccinated people.

COVID-19 News & Notes

  • Families and students who visit the APS Welcome Center to register or complete their AOVP will also be able to receive a free COVID-19 vaccine on Aug. 25.

  • Effective Wednesday, Aug. 18, all individuals, age two and older, who enter Arlington Public Library buildings will be required to wear a mask, regardless of vaccination status.

  • Arlington Transit will return to full bus service on Tuesday, Sept. 7, with ART 53, 61, 62 and 74 resuming after being out of service since March 2020 due to COVID-19.

  • The FDA approved the Pfizer-BioNTech COVID-19 Vaccine (it will now be marketed as Comirnaty) for individuals 16 years of age and older.

  • A recent report found that estimates of vaccine effectiveness against symptomatic infection from the Delta variant was 78% in Mesa County, Colorado.

Questions about COVID-19? Call the County's public information line at

703-228-7999, Mon.-Fri., 9 a.m.-5 p.m.


COVID-19 Vaccine Dashboards

In Arlington County, 72.1% of the adult population has received at least one dose of the COVID-19 vaccine, and over 136,000 people are fully vaccinated. In Virginia, more than 4.7 million people are fully vaccinated. 

map of virginia showing covid vaccine rates