Principal Vaccines Used in the United States to Prevent Viral Diseases in Humans Smallpox:Live vaccinia virus Poliomyelitis:Inactivated virus Rabies:Inactivated virus Hepatitis A:Inactivated virus Influenza:Inactivated or attenuated virus Measles:Attenuated virus Mumps:Attenuated virus Rubella:Attenuated virus Chickenpox:Attenuated virus Hepatitis B:Antigenic fragments (recombinant vaccine)• Smallpox: Live vaccinia virus • Poliomyelitis: Inactivated virus • Rabies: Inactivated virus • Hepatitis A: Inactivated virus • Influenza: Inactivated or attenuated virus • Measles: Attenuated virus • Mumps: Attenuated virus • Rubella: Attenuated virus • Chickenpox: Attenuated virus • Hepatitis B: Antigenic fragments (recombinant vaccine) Principal Vaccines Used in the United States to Prevent Viral Diseases in Humans