(Updated at 11:50 a.m.) Fairfax County jumped overnight from 80 known coronavirus cases to 124.
As of this morning (Friday), the Fairfax Health District has the highest number of presumptive cases, followed by Arlington County, which has 63 cases, according to the Virginia Department of Health.
The Fairfax Health District includes Fairfax County, the cities of Fairfax and Falls Church and towns in the county.
Expanding testing capacity in the state could explain the increase in confirmed cases.
Inova Urgent Care locations in Chantille, Arlington and Tysons recently turned into respiratory illness clinics that offer the test.
Statewide, 604 cases of the virus have been identified of the 7,337 people who have been tested. Fourteen people have died from the respiratory illness, with one death in Fairfax County.