MIAMI—Florida was one of the earliest states to lock down elder-care facilities in the coronavirus pandemic, and the move helped stave off widespread deaths at such centers in the spring. But as the state contends with a surge of new infections, those defenses have faltered, triggering a fresh round of government interventions.
Daily fatality counts from elder-care facilities in Florida climbed to their highest level so far in the past week, with the seven-day average reaching 56 on Monday, about triple the average a month…