UNICEF reports an increase in ‘zero dose children’ since 2019. Mission Indradhanush reduced this by 34% (2014-2023). WUENIC cited 21m under-immunized children in 2023. India’s immunization covers 83.4%, surpassing global rates: DTP, measles, polio, whooping cough vaccinations. Factors: misinformation, access, hesitancy. Herd immunity crucial. Coverage at 93.23%. Polio-free for 13 years. Pandemic impact and pregnant women included.