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The number of known coronavirus cases in the District, Maryland and Virginia stands at 18,765 on Wednesday, with 10,038 cases in Maryland, 6,526 in Virginia and 2,201 in the District. The number of virus-related deaths was 413 in Maryland, 195 in Virginia and 73 in the District, for a total of 681 fatalities.

Here are some of the most significant recent developments as the region responds to the pandemic of the novel coronavirus, which causes the disease covid-19:

• D.C. extended its public health emergency and closure of schools until May 15. Mayor Muriel E. Bowser (D) announced that other coronavirus restrictions in the city, including nonessential business closures, a stay-at-home order and a ban on gatherings of 10 or more people are also extended.

• Virginia Gov. Ralph Northam (D) extended his shutdown order for nonessential businesses — which initially was set to expire April 23 — until May 8. A separate stay-at-home order for Virginia residents is in effect through June 10.

• Maryland Gov. Larry Hogan said the state plans to hire 1,000 people to work in local health departments as investigators work to trace the path of the coronavirus.

• The District, Maryland and Virginia reported a record high of 93 confirmed deaths on Wednesday. They also reported 1,030 new infections, bringing the total caseload across the three jurisdictions past 18,700.