<prompt> Vaccines that must be given before age of two years according to IAP are all of the following EXCEPT?Varicella vaccineMMR vaccineConjugated typhoid vaccinePneumococcal polysaccharide vaccine  <response>: Vaccine Recommended age of vaccination 1st dose a. Varicella vaccine 15 months b. MMR vaccine 9 months c. Conjugated typhoid vaccine 9 months d. Pneumococcal polysaccharide vaccine Beyond 2 yrs age - As polysaccharides stimulate B-cells independent of T-cells, the pneumococcal polysaccharide is poorly immunogenic at 2yrs age immunological memory is low - Hence, it is recommended beyond 2yrs of age. 