{"entity":{"iso2":"TD","iso3":"TCD","name":"Chad","slug":"chad"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"ipv1-number-unvaccinated","source":"WHO & UNICEF (2025); UN, World Population Prospects (2024) \u2013 processed by Our World in Data","source_url":"https://ourworldindata.org/grapher/ipv1-number-unvaccinated","title":"Number of one-year-olds who have not received the inactivated polio vaccine","unit":"one-year-olds"},"observations":[{"date":"2015-01-01","value":431975.0},{"date":"2016-01-01","value":363039.0},{"date":"2017-01-01","value":369824.0},{"date":"2018-01-01","value":325634.0},{"date":"2019-01-01","value":320157.0},{"date":"2020-01-01","value":309086.0},{"date":"2021-01-01","value":255635.0},{"date":"2022-01-01","value":240827.0},{"date":"2023-01-01","value":242358.0}],"summary":{"latest_period":"2023-01-01","latest_value":242358.0,"max":431975.0,"mean":317615.0,"min":240827.0,"of":194,"rank":18,"trend":"falling"}}