There are now well over 600 confirmed coronavirus cases in Pennsylvania, the state Department of Health said Monday.

The department has confirmed 644 cases statewide, a one-day increase of 165 cases. It’s the largest one-day increase to date. The health department released new figures Monday.

Cases have now been identified in 34 of Pennsylvania’s 67 counties. All of those who have tested positive for the coronavirus are either in isolation at home or being treated at a hospital, the health department said.

Gov. Tom Wolf is expected to issue a “stay-at-home” order today for Philadelphia and its suburbs, as well as Monroe and Allegheny counties, Spotlight PA reported.

There are 6,595 patients who have tested negative, the department said. The state is no longer providing updates on how many test results are still pending. Most testing is now being done in private laboratories or in hospitals.

On Sunday, a man in Monroe County died from complications of the coronavirus, according to a local official. He was a 56-year-old man from East Stroudsburg, the Monroe County Coroner said, according to lehighvalleylive.com. The state health department tally Monday lists three fatalities but the Monroe County death, if confirmed by the state, would appear to be the fourth.

While the bulk of the cases have been reported in the eastern part of the state, more cases are being reported across Pennsylvania, the health department says.

Most counties in the Harrisburg region have at least one confirmed case, according to state figures. Cumberland County leads the Harrisburg area with 12 cases, including one new case reported today.

Montgomery County has the highest number of cases at 129, with Philadelphia just behind with 128 cases. Dozens of new cases were reported in the city and in Montgomery today.

In western Pennsylvania, Allegheny County now has 48 cases, including eight new cases reported today. In northeastern Pennsylvania, Monroe County now has 43 cases, including 12 new cases reported today.

The first cases of coronavirus in Pennsylvania were reported a little more than two weeks ago. State health officials have said the exponential growth in cases is driving the state’s tougher measures to prevent hospitals from being inundated with more cases than they can handle.

Wolf has taken aggressive steps to stem the spread of the coronavirus. He has ordered businesses that aren’t considered life-sustaining to close and the enforcement of that order began at 8 a.m. State police and other state agencies will be enforcing the order.

The governor has also closed schools for a two-week period and has said they could be shut down for a longer period but no decision has been made.

Pennsylvania Health Secretary Dr. Rachel Levine has urged Pennsylvania residents to stay home so the virus can’t spread. Health officials are worried about hospitals being overwhelmed if the number of cases keeps growing exponentially.

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