National Vaccination Day is celebrated in India on 16 March every year to raise awareness about the significance of vaccines in the human body. In 1995, on the same day, the government of India started the pulse polio Immunisation Programme. Vaccines have helped in the eradication of diseases that were once widespread, such as smallpox and polio. They have also played a vital role in the control of other major diseases such as influenza, pneumonia, and cervical cancer. The theme for 2024 is 'Vaccines work for all' and emphasizes that safe and effective vaccination is necessary for all.