I don’t know what it is about Cowans Gap State Park’s beach and lake.

In 2011, at least 18 people were sickened with E. coli O157.

Now, the beach and lake is closed again as the Pennsylvania Department of Health continues to investigate what sickened people the weekend of July 18.

The latest information from the state said more than 90 people might have fallen ill after swimming in the lake in Fulton County. The estimate in an initial news release was “more than two dozen cases.”

Department of Health spokeswoman Amy Worden said Monday she did not have an update on what caused the sickness. Epidemiologists and lab technicians are studying stool samples.