Lawrence Livornese, an infectious-disease specialist and the chairman of the department of medicine at Main Line Health, said that even though young people are at lower risk for dying from coronavirus, they need to follow recommendations from health officials to help prevent community spread. Research has shown that people can still spread the virus even if they’re not showing symptoms. Social distancing can help reduce the number of overall cases, keep the health-care system from being overwhelmed, and buy governments and the private sector time to develop treatments, testing kits, and other supplies.