Large-scale vaccination rounds help rapidly boost immunity
The Global Polio Eradication Initiative assists countries in carrying out surveillance for polio and large-scale vaccination rounds. In just one round of the national immunization days in India there are 640 000 vaccination booths, 2.3 million vaccinators, 200 million doses of vaccine, 6.3 million ice packs, 191 million homes visited and 172 million children immunized.