Around the world, vaccines prevent between 2 to 3 million deaths every single year. Thousands of people work tirelessly in the long process necessary to reach every child with vaccines, facing many challenges along the way. In Bangladesh, the recent inactivated polio vaccine introduction highlighted the people at the heart of this process.

Dr Abdur Rahim, the programme manager of the Expanded Programme on Immunization, feels it is his duty to protect every single child as he would his own; Paediatricians like Dr Probir Kumar Sarker engage parents in the importance of bringing their children to be vaccinated; and health workers like Dr Luna Unnekamrun deliver the lifesaving vaccines to the children at the end of this human chain. These people, and many others, leave an incredible legacy of protection to every child they strive to reach.