Physicians, physician assistants, nurses, health care employees, clinical and diagnotist laboratory employees, workers in hospital laundries or commercial laundries that serve health care or public safety institutions, tissue bank personnel, employees of blood banks & plasma centers , Dentists, hemodialyssi clinics, urgent-care clinics, education and correctional facilities, first aid employees, hospice employees, home health care workders. HIV & HBV research lab, EMT, paramedics, firefighters, law enforcement