Social & Preventive Medicine Communicable diseases 75a74cc3 SA-14-14-2- A Deploid cell inactivated B Killed vaccine C Life long immunity D Primary immunization 2 doses High-Yield Explanation SA 14-14-2 strain is live attenuated vaccine whuch offers life ling immunity.Ref.PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 21st edition page no 261