Congenital passive immunity is NOT found in -: (A) Polio, (B) Mumps, (C) Rubella, (D) Measles
Answer is A. The maternal antibodies gradually disappear during the first 6 months of life. Immunity following injection is fairly solid although reinfection can occur since infection with one type does not protect completely against the other 2 types of viruses (refer pgno:205 park 23rd edition)