Graph 15.4: Polio cases in India, if AFP cases are reverted to pre-1997 polio definition change from 1974 to 2022. (Underlying research by Vratesh Srivastava, Independent Data Analyst; World Health Organization (WHO) AFP/polio data, https://extranet.who.int/polis/public/CaseCount.aspx; Our World in Data: Difference between reported and estimated cases of polio, India, https://ourworldindata.org/grapher/reported-vs-estimated-total-number-of-paralytic-polio-cases-globally?country=~IND; T. Jacob John and Vipin M. Vashishtha, “Eradicating poliomyelitis: India’s journey from hyperendemic to polio-free status,” Indian Journal of Medical Research, May 2013, vol. 137, pp. 881-894, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3734678; Kaushik Banerjee, et al., “Poliomyelitis surveillance: the model used in India for polio eradication,” vol. 78, no. 3, 2000, pp. 321-329, https://pubmed.ncbi.nlm.nih.gov/10812728; Yash Paul, “Polio Eradication Programme: A Failure,” Economic and Political Weekly, vol. 41, no. 43/44, November 4-10, 2006, pp. 4538-4540.) *Tenth Anniversary Edition Only