Coronavirus detectives couldn’t get partygoers to answer the phone. So they issued subpoenas.

After a woman in Rockland County, N.Y., admitted to throwing her daughter a party while showing coronavirus symptoms, contact tracers sprung into action. They phoned dozens of guests, hoping to get the partygoers tested and isolated and stop an emerging coronavirus cluster in its tracks. But many of the attendees hung up, handed the calls […]