Pennsylvania now has confirmed 1,127 cases of the coronavirus, with 276 new cases reported, the state Department of Health said Wednesday.

The health department says at least 11 people have died due to the coronavirus. The virus has been found in 44 of Pennsylvania’s 67 counties. The new figures mark the largest one-day increase to date.

Gov. Tom Wolf also expanded stay-at-home orders to Lehigh and Northampton counties Wednesday. Ten counties are now under stay-at-home orders, including the Philadelphia region and the Pittsburgh area. The order also includes Monroe and Erie counties.

More than 6 million people in Pennsylvania - about half the state’s population - live in a county with an order to stay at home.

The bulk of the cases have been reported in the Philadelphia area but cases continue to rise across the state. Philadelphia leads the state with 257 cases, followed by neighboring Montgomery County.

Delaware County reported its first two coronavirus-related deaths Wednesday, the Associated Press reported. Those deaths are not yet included in the data released by the state Wednesday.

More cases are emerging in western Pennsylvania, according to the health department. Allegheny County has 88 cases; the county is under a stay-at-home order.

Most counties in the Harrisburg area have confirmed cases of the coronavirus. York County has 20 cases, leading the midstate counties. Cumberland County has 13 cases, while Lancaster County has 12 and Dauphin has 10.

There are 11,193 patients who have tested negative, the department said. The state health department no longer says how many tests results are pending. Most testing is now being done in commercial laboratories, the department said.

State Health Secretary Dr. Rachel Levine has urged Pennsylvania residents to stay home to reduce the spread of the disease. The first case in the state was reported less than three weeks ago. Levine has said she’s concerned the exponential growth of cases could overwhelm hospitals.

“Our notable increase in cases over the past few days indicate we need everyone to take COVID-19 seriously,” Levine said in a statement.

Repeating a familiar refrain, Levine said, “Pennsylvanians have a very important job right now: stay calm, stay home and stay safe."

Wolf has ordered businesses that aren’t life-sustaining to close temporarily to stem the spread of the virus. Some businesses have appealed for waivers to stay open and have sought more guidance from the state about whether or not they can operate.

The governor has also closed schools until at least April 6 and possibly later if necessary. School districts are working on remote instruction and also increasingly bracing for the possibility that schools won’t reopen this year.

Universities and colleges across Pennsylvania have said they won’t offer in-person classes for the rest of the spring semester and are providing classes online.

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