Many counties, particularly small counties, do not have enough paid health care workers to staff vaccination clinics for hours every day, so they rely on volunteers to squeeze in time on days off, and before and after work, to help inoculate people against the deadly virus. The people stepping up are often doctors, nurses and students who give up their free time after long hours in classrooms, medical practices, ICUs, and ERs where they have battled the virus for the past year.