Connecticut officials on Monday ordered movie theaters, gyms and other businesses closed until further notice, joining with New York and New Jersey in announcing restrictions aimed at curbing the spread of the coronavirus.

Many businesses were ordered to close as of 8 p.m. Monday, and bars and restaurants were limited to offering only takeout. Connecticut Gov. Ned Lamont also urged the Foxwoods Resort Casino and Mohegan Sun to close. Essential businesses such as supermarkets and gas stations will be able to stay open.

“We are in this together,” Lamont said during a conference call with the governors of New York and New Jersey. ”This is changing so fast. We’ve got to work together on a coordinated basis.”

Public gatherings of more than 50 people were restricted, in line with guidance from the Centers for Disease Control and Prevention. Lamont on Sunday ordered all public schools in the state to close beginning Tuesday.

For most people, the virus causes only mild or moderate symptoms, such as fever and cough. For some, especially older adults and people with existing health problems, COVID-19, the illness caused by the virus, can cause more severe illness, including pneumonia, or death. The vast majority of people recover.

Restaurant owners said they already have been taking action in response to the coronavirus, including increasing cleaning.

“Local restaurant owners will continue to offer safe, clean service to customers via takeout, curbside pickup and delivery,” said Scott Dolch, executive director of the Connecticut Restaurant Association.

Lamont acknowledged Monday there are “legal and jurisdictional issues” concerning whether the Mashantucket Pequot and Mohegan tribes will agree to his call to close Mohegan Sun and Foxwoods Resort Casino in southeastern Connecticut. The tribes’ casinos are on reservations that are considered sovereign nations.

“We are urging the tribes in the strongest possible way, they ought to be closing down those casinos,” Lamont said.

Messages were left seeking comment with representatives of both tribal casinos.