GREENWICH — The town of Greenwich is seeing another sharp increase in coronavirus cases.

There have been 1,427 diagnosed cases of the coronavirus in town since the beginning of the pandemic — an increase of 60 cases since Wednesday, First Selectman Fred Camillo said Friday evening in an eblast to residents. That’s also an increase of 115 cases since last Friday.

The town Health Department is monitoring more than 100 of the residents as “active cases,” Camillo said. That means contact-tracing efforts are underway to determine more potential exposures.

Greenwich Hospital reported it was treating 17 patients diagnosed with the virus — a decrease of one since Wednesday.

Camillo, who said earlier this week he consider revising the town’s park and beach policy, on Friday announced that nonresidents will not be allowed into Greenwich Point starting Monday. The town will continue to require proof of residency with a 2020 beach pass or ether a driver’s license or a state-issued ID. Guest passes purchased in 2020 will be honored through Dec. 31.

The first selectman urged residents to wear masks and practice social distancing as the rate of infection rises. He also encouraged residents to get a test if they show symptoms of the coronavirus or have been near someone who has tested positive.

Greenwich Hospital has testing available by appointment. Family Centers Inc. offers a weekly clinic from 4 to 6 p.m. Tuesdays at Wilbur Peck Court.

In his weekly eblast to residents, Camillo said to take precautions for the Thanksgiving holiday.

“As we prepare for the Thanksgiving holiday, we must prepare to celebrate in a much different fashion from years past,” Camillo said. “As the COVID-positive test rates continue to increase, we should heed the advice to gather with those with whom you live and limit gatherings to no more than 10 people. Hopefully, Mother Nature will cooperate and we will be able to bring celebrations outdoors.”

Town Health Director Caroline Baisley last week noted that Halloween gatherings had likely caused a rise in cases.

“We cannot be careful enough, we do not know where or when the next case will be,” Camillo said. “The Perrot Memorial Library had to suspend operations this week after an employee tested positive. On Thursday, the Department of Human Services temporarily closed the Byram Archibald Neighborhood Center after-school program for two weeks because a staff member tested positive.”

Camillo said he did not anticipate closing parks and beaches like he did in March. But he did note in his eblast that there had been “large crowd conditions at Greenwich Point during the past several weekends.” The town has limited parking at Greenwich Point to 750 cars since the summer and Camillo reported that last weekend alone, beach staff had to turn away close to 1,300 vehicles because of either a lack of proof of residency or the parking capacity had already been reached.