"In keeping with this commitment the community has acted with an abundance of caution, and in partnership with the Fairfax County Department of Health, has taken all necessary measures to fully implement proven infection prevention and control strategies. We remain vigilant in our response and will continue to provide frequent and transparent updates to residents, staff and family members," the retirement home said in a statement.
The Fairfax County Health Department said it is investigating the incident.
The department said that appropriate measures had been taken to reduce the risk of infection and keep residents safe, including closing the facility to new admissions, cancelling group activities, keeping ill residents in their rooms and increasing cleaning.
Residents experiencing any of those symptoms were urged to call the community's medical center.
ABC News' Amanda Maile, Sarah Herndon and Kyra Phillips contributed to the reporting in this story.