According to WHO, there are still nearly 20 million unvaccinated and under-vaccinated children in the world. India has the largest number of births in the world – more than 26 million a year – but sadly India also accounts for more than 20 per cent of child mortality worldwide. Out of the 20 million unvaccinated children in the world India alone accounts for 7.4 million unvaccinated children. The national average for full immunization is 62 per cent(NFHS 3)