Salk vaccine is a:: (A) Live vaccine, (B) Live attenuated vaccine, (C) Killed vaccine, (D) Toxoid
Answer is C. c. Killed vaccine(Ref: IAP Guidebook on Immunization 2013-14; pg 113-117, Nelson's 20/e p 3212, Ghai, 8/e p 190- 191)Polio vaccines were developed in the USA during 1950, first the inactivated polio vaccine (IPV) by Jonas Salk and later the live oral polio vaccine (OPV) by Albert Sabin. Remember: 'Salk' is a 'killed' vaccine.