{"entity":{"iso2":"TZ","iso3":"TZA","name":"Tanzania","slug":"tanzania"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"ipv-vaccine-coverage","source":"WHO & UNICEF (2025); UN, World Population Prospects (2024) \u2013 processed by Our World in Data","source_url":"https://ourworldindata.org/grapher/ipv-vaccine-coverage","title":"Share of one-year-olds who received the inactivated polio vaccine","unit":"%"},"observations":[{"date":"2018-01-01","value":56.0},{"date":"2019-01-01","value":91.0},{"date":"2020-01-01","value":91.0},{"date":"2021-01-01","value":86.0},{"date":"2022-01-01","value":87.0},{"date":"2023-01-01","value":83.0},{"date":"2024-01-01","value":83.0}],"summary":{"latest_period":"2024-01-01","latest_value":83.0,"max":91.0,"mean":82.4286,"min":56.0,"of":194,"rank":143,"trend":"rising"}}