https://blogs.scientificamerican.com/observations/how-can-we-increase-trust-in-vaccines/

In the early 90s, I was a pediatrician working in a small town in my home state of Gujarat, India when a wave of polio cases hit the state. This outbreak was on a scale that I had never experienced before. I personally treated more than 50 cases in less than two months.

As the outbreak spread, I realized the urgent need to increase awareness about the disease and the vaccine. For many rural and migrant families, I knew that the polio vaccine would be their first brush with organized health care. So, I started creating informational booklets and postcards to be distributed through my network of pediatricians – one of the first ways I became involved in the movement to end polio in India.