Th is week on The Exchange: An in-depth series on the impact of COVID-19 on our health care system. Among those most vulnerable to this disease are health care workers; many have dealt with shortages of testing supplies, equipment, and staff, as well as shifting guidelines from authorities. We talk with three New Hampshire caregivers, all in the early years of their careers, about how this pandemic has affected them and their workplaces, as well as how these experiences might help shape the