Joann Rubino brought her cell phone outside to the balcony and swept the camera around for a neighborhood panorama. The sky blazed a brilliant blue, the apartment buildings an unmistakable burnt sienna. But there wasn’t a soul in sight. “It’s a beautiful spring day, but I’m not leaving the house,” Rubino, 63, said via Facebook from her Italian home. On a typical day in Castel Morrone, a town of about 3,500 people an hour’s drive from Naples, Rubino might be strolling the streets, dropping in on friends and family, stopping at a bar for a coffee or at a pizzeria—living la dolce vita.