All Pennsylvania residents must stay home as much as possible to help slow the spread of the coronavirus, Gov. Tom Wolf said Wednesday as he dramatically expanded the footprint of the quarantine to include the entire state.

The Democratic governor added 34 counties to his existing stay-at-home order, meaning that residents of all 67 of Pennsylvania’s counties are now asked to stay put unless they have a legitimate reason to go out.

With coronavirus infections continuing to rise dramatically in the state — nearly 1,000 new confirmed cases were reported Wednesday — Wolf called a statewide quarantine “the most prudent option.”

“We appreciate the shared sacrifice of all 12.8 million Pennsylvanians; we are in this together,” Wolf said in a statement.

The expanded order will take effect at 8 p.m. Wednesday and last through at least April 30.

Residents may leave their homes for a number of reasons that include working at a business that’s still open, going to the grocery store or pharmacy, visiting a doctor, caring for a relative or heading outside to exercise. Police will continue to focus on informing residents of the order rather than on enforcement, according to the governor’s office.

Separately, schools and nonessential businesses are closed until further notice.