The following are live attenuated vaccine, except-: (A) Oral poilio, (B) Yellow fever, (C) Measles, (D) Influenza
Answer is A. oral polio vaccines were first introduced by Sabin in 1957.it contains live attenuated strains of virus type 1,2, and 3.grown in primary monkey kidney or h7man diploid cell cultureref;parks tectbook,ed22,pg 187