FAQ: What CDC’s latest guidelines mean for DC region – WTOP

The CDC has updated its mask guidelines. Here’s what the changes mean for the D.C. region.

The Centers for Disease Control and Prevention has walked back some mask-wearing guidelines, recommending fully vaccinated people return to wearing masks indoors in parts of the country where the coronavirus is surging.

WTOP has answers to some common questions about where D.C., Maryland and Virginia stand on coronavirus guidelines.

  • Q: What does the CDC’s new mask guidance say?
  • The CDC announced new recommendations that vaccinated people return to wearing masks indoors in parts of the U.S. where the coronavirus is surging. The CDC also recommended indoor masks for all teachers, staff, students and visitors to schools, regardless of vaccination status — citing new information about the ability of the delta variant to spread among some vaccinated people.

    Most new infections in the U.S. continue to be among unvaccinated people. So-called breakthrough infections, which generally cause milder illness, can occur in vaccinated people.

  • Q: How does the CDC describe different levels of community transmission?
  • The CDC tracks community transmission based on two indicators: The total number of cases in the past seven days per 100,000 residents and the positivity rate of coronavirus tests in a given area over the past seven days.

    The cases per 100,000 indicator is broken down into four levels:

    • Low transmission: 0 — 9.99 cases per 100,000 persons in the last seven days
    • Moderate transmission: 10 — 49.99 cases per 100,000 persons in the last seven days
    • Substantial transmission: 50 — 99.99 cases per 100,000 persons in the last seven days
    • High transmission: 100 or more cases per 100,000 persons in the last seven days

    The positivity rate indicator is also broken down into four levels:

    • Low transmission: 0 -4.99% positivity rate
    • Moderate transmission: 5-7.99% positivity rate
    • Substantial transmission rate: 8-9.99%
    • High transmission rate: Greater than 10%

    Community transmission rates are being tracked by the CDC.

  • Q: What do the numbers look like in DC, Maryland and Virginia?
  • The CDC recommends looking at data at a county level.

    As of Aug. 5, here are areas that have transmission rates considered substantial or high per the CDC’s category, per CDC data.


    D.C. — 83.60 cases


    • City of Alexandria — 70.25
    • Arlington — 75.16
    • Fairfax County — 59.43
    • Loudoun County — 68.68
    • Prince William County — 88.23
    • Stafford County — 128.20


    • Anne Arundel County — 66.47
    • Charles County — 93.72
    • Frederick County — 69.74
    • Montgomery County — 52.44
    • Prince George’s County — 77.97

    The CDC’s new policies recommend indoor mask-wearing cover cases where substantial and high transmission are occurring.

  • Q: Does the CDC recommend wearing masks indoors for fully vaccinated people in D.C., Maryland and Virginia?
  • The CDC’s guidelines recommend indoor mask-wearing in areas of substantial or high transmission, regardless of vaccination status. However, it’s up to each jurisdiction whether they will reimpose mandates that people wear face coverings.

    In D.C., a new indoor mask order regardless of vaccination status went into effect July 31 at 5 a.m.

    In Virginia, Gov. Ralph Northam recommended Virginians “consider” wearing masks indoors where there is an increased risk of COVID-19 transmission indicated by the CDC’s new guidelines. “This is not a requirement, but a recommendation,” he said.

    In a July 27 announcement, the City of Alexandria announced that it also has substantial transmission level. “Because Alexandria is currently in a state of substantial transmission, and is exceeding 50 new cases per 100,000 residents in the past seven days, masks should be worn in public indoor settings,” the city said in a news release.

    Loudoun County’s government will require all its employees and visitors to county facilities — regardless of vaccination status — to wear face masks while inside all county facilities beginning Monday, Aug. 9.

    In Maryland, Anne Arundel County announced that masks are required indoors at all county-owned buildings, regardless of people’s vaccination status, and starting next month, all county employees will need to either show proof of vaccination or take weekly COVID-19 tests before reporting to work.

    In Prince George’s County, Executive Angela Alsobrooks announced an indoor public mask mandate starting Aug. 8. at 5 p.m. The county also requires masks to be worn inside all county government building, which takes effect Aug. 6 at 5 p.m.

    The City of Laurel joined Prince George’s County in reinstating its indoor face mask policy for everyone entering a city building or facility. Everyone who enters a city facility will be required to sanitize their hands and have their temperature taken at the entrance.

    Officials in Montgomery County, Maryland, voted to reinstate a mask mandate requiring people in the county to wear face coverings in indoor public spaces, regardless of whether they have been vaccinated against COVID-19. It goes into effect Aug. 7 at 12:01 a.m. and applies to “indoor areas open to the public.”

    Gaithersburg and Rockville, in Montgomery County, are again requiring visitors and staff in city buildings to wear masks, regardless of vaccination status.

  • Q: Some places are requiring state government employees to either get vaccinated or get tested weekly. Will D.C., Maryland or Virginia be doing anything similar?
  • Virginia Gov. Ralph Northam announced that all Virginia state workers will have to show they are vaccinated against COVID-19 or submit to weekly testing. The order will take effect on Sept. 1 and will apply to more than 120,000 state employees.

    In Fairfax County, the Board of Supervisors voted in support of requiring county employees to be fully vaccinated before returning to in-person work, NBC Washington reported. The decision, which affects 12,000 employees, is up to the county executive.

    Maryland is requiring state employees working in congregate facilities to be vaccinated or submit to regular COVID-19 testing and mask-use beginning Sept. 1.

    A spokeswoman for D.C. Mayor Muriel Bowser said that Bowser continues to engage labor partners, but hasn’t mandated vaccination for city government employees at this point.

    D.C. Attorney General Karl Racine has mandated that every employee in his office get vaccinated against COVID-19.

    Officials in Anne Arundel County, Maryland, announced that starting Sept. 13, all county employees will need to either show proof of vaccination or take weekly COVID-19 tests before reporting to work.

    Officials in Prince George’s County, Maryland, said new policies and a timeline, currently being drafted, will require county employees reporting to the office to get vaccinated or be regularly tested for COVID-19. The administration is currently working with the Office of Human Resources Management to determine the criteria as the county government continues moving forward with its return-to-work plan. That information will be forthcoming, according to a release.

  • Q: What are the mask regulations for DC-area public schools?
  • The CDC recommends that all students wear masks in school.

    Faced with the new CDC guidance and the approaching start to the school year, more school districts across the D.C. region are making decisions about what to do.


    In Maryland, the large public school systems in the WTOP listening area are requiring masks in school buildings regardless of vaccination status.

    Anne Arundel, Charles, Frederick, Howard, Montgomery County and Prince George’s counties in Maryland are requiring masks to be worn in school buildings. Additionally, student-athletes in Charles County public schools are now required to either provide proof of having been fully vaccinated or enter in a COVID-19 screening program to participate in fall sports.

    D.C. Public Schools is also requiring masks in its school buildings.

    In Virginia, school systems in Arlington County, Alexandria City, Fairfax County, Loudoun County and Prince William County are also requiring masks for students.

    Stafford County will temporarily require teachers, students and staff to wear masks indoors for the first 30 days of school this fall. Board member Irene Hollerback says this will give them time to look at metrics and come up with a long-term plan. Later this month, the board will also consider an opt-out form for parents that don’t want their kids to wear masks.

  • Q: What prompted the CDC to change its guidance?
  • The CDC revised its guidance on mask-wearing due to new COVID-19 surges in the U.S. in areas where people largely remain unvaccinated, coupled with the ability of the more virulent delta variant to spread — even among vaccinated people.

    The CDC said that “breakthrough” infections, which generally cause milder illness, can still occur in vaccinated people. With the delta variant, the level of virus in infected vaccinated people is “indistinguishable” from the level of virus in the noses and throats of unvaccinated people, CDC Director Rochelle P. Walensky.

  • Q: How are the beaches faring?
  • Maryland’s Worcester County, where Ocean City is located,  has reached substantial community transmission as defined by the CDC.

    Sussex County, where Rehoboth, Bethany and Fenwick are located, is also at substantial transmission.

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