Gov. Andrew M. Cuomo has outlined a regional, phased plan to reopen parts of New York State “at the appropriate time.”

“Even though everybody is optimistic that the number is going to go down. . . . The big question is when are we going to see a full decline,” said Robert Chaloner, the hospital's chief administrative officer.

New testing sites are opening across the state and the county, however much of the information remains ambiguous. Antibody tests are not widely available yet here, and diagnostic tests are still hard to come by and largely limited to those who are already showing symptoms of Covid-19 or who are essential workers in critical fields.

The East Hampton Town Trustees have an important role in balancing the summer popularity of the beaches under their jurisdiction with the protection of those most at risk of Covid-19 infection, a public health expert said.