Officials interviewed 539 residents who were diagnosed with COVID-19 between November 3 and November 16.
Of those cases, officials say 33 percent reported contact with a known case, 21 percent had that contact with a known case at home and 12 percent had that contact with a known case in the community.
In addition, health officials identified the following sites outside of their homes where cases may have been exposed:
48 percent reported going to work
38 percent reported going to one or more restaurants
12 percent reported going to a gathering (e.g., wedding, funeral, or party)
17 percent reported traveling out of the District of Columbia, Maryland, and Virginia area
7 percent reported going to a gym
Officials added that the areas listed were common locations among Arlington cases interviewed and that it did not mean they were the definitive source for COVID-19 exposure.