Sorry for hijacking this comment thread but I'd like to share a few of my personal experiences in this process.

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As a high-school student, I remember my entire school participated in the early years of this drive. I remember students being assigned specific areas of my town - groups of three to five, assigned an area consisting of a few blocks of multi-storeyed apartments. Each group was asked to canvass and get names of kids under five years of age in every house in their assigned area.

If you were wondering why any of us would bother to put in an honest shift, the collection of said kids' names was 'gamified' to some extent. Moreover, for us kids, it was simply time away from school, i.e. no lessons, no teachers, just us friends going from door-to-door. Schools would be given points based on the accuracy of data. (I am still not sure how they decided this but that's what we were told anyway. It sure helped to keep the lazy miscreants among us on the straight and narrow.) The data collected by the students would then be handed over to the authorities in charge of the vaccination process, who would then draw up a list of vaccination centers.

One of the more interesting things was broadcasting a single, 'target' date every year for mass vaccinations. The government would broadcast this date (typically the second or third Sunday of January) over various media and also conduct last-mile publicity campaigns with a loudspeaker blaring reminders in every area as the 'target' date came closer.

Bear in mind, these vaccines were usually available at government-run clinics and hospitals on any given day of the year but setting a target date ensured that people allocated time out of their schedules. Furthermore, since the target date was always a Sunday, almost everyone could be convinced to make an appearance. That being said, there was an additional arrangement to ensure that those who didn't/couldn't make it to a center on a target date still wouldn't miss out on that all-important dose of vaccine.

As for us students, our contribution to the process did not stop with the collection of data. Since our school was a center for mass-vaccinations, we were expected to sit at the vaccination booths and cross-check the arriving vaccinees (is that a word? Never mind, it is now...) against the lists we created and ensure that every kid on that list got vaccinated. Think elections, but for vaccination.

Furthermore, we were made to go to their houses with volunteers carrying medicines and ensure that kids who couldn't/hadn't made an appearance yet didn't miss out on the vaccine.

I can't remember if any of these efforts earned us extra points on our annual grades but hey, we were happy enough to get 'school-sanctioned loitering time' on a school-day!

<TL;DR> As a school student, my school ensured that I played a small part in the early days of this campaign. While most of us did it for shits and giggles, it is only now that we realize that we played a small part in the process and can feel proud of putting in an honest shift all those years ago.

Credit must go to the people who designed and executed this campaign ceaselessly over the last twenty years. Their efforts have ensured that no child was, indeed, left behind when it came to administering the all-important drops of the polio vaccine.