{"entity":{"iso2":"TD","iso3":"TCD","name":"Chad","slug":"chad"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"polio-number-unvaccinated","source":"WHO & UNICEF (2025); UN, World Population Prospects (2024) \u2013 processed by Our World in Data","source_url":"https://ourworldindata.org/grapher/polio-number-unvaccinated","title":"Number of one-year-olds who are not vaccinated against polio","unit":"one-year-olds"},"observations":[{"date":"1984-01-01","value":189367.0},{"date":"1985-01-01","value":205476.0},{"date":"1986-01-01","value":197181.0},{"date":"1987-01-01","value":188441.0},{"date":"1988-01-01","value":195542.0},{"date":"1989-01-01","value":192922.0},{"date":"1990-01-01","value":202820.0},{"date":"1991-01-01","value":217462.0},{"date":"1992-01-01","value":247074.0},{"date":"1993-01-01","value":252454.0},{"date":"1994-01-01","value":247861.0},{"date":"1995-01-01","value":253128.0},{"date":"1996-01-01","value":251375.0},{"date":"1997-01-01","value":251181.0},{"date":"1998-01-01","value":245588.0},{"date":"1999-01-01","value":235274.0},{"date":"2000-01-01","value":257509.0},{"date":"2001-01-01","value":280650.0},{"date":"2002-01-01","value":269997.0},{"date":"2003-01-01","value":257614.0},{"date":"2004-01-01","value":286583.0},{"date":"2005-01-01","value":273444.0},{"date":"2006-01-01","value":232320.0},{"date":"2007-01-01","value":293364.0},{"date":"2008-01-01","value":342039.0},{"date":"2009-01-01","value":342453.0},{"date":"2010-01-01","value":295707.0},{"date":"2011-01-01","value":321490.0},{"date":"2012-01-01","value":270572.0},{"date":"2013-01-01","value":307267.0},{"date":"2014-01-01","value":327509.0},{"date":"2015-01-01","value":287983.0},{"date":"2016-01-01","value":344580.0},{"date":"2017-01-01","value":351020.0},{"date":"2018-01-01","value":351174.0},{"date":"2019-01-01","value":352826.0},{"date":"2020-01-01","value":329244.0},{"date":"2021-01-01","value":297090.0},{"date":"2022-01-01","value":297492.0},{"date":"2023-01-01","value":242358.0}],"summary":{"latest_period":"2023-01-01","latest_value":242358.0,"max":352826.0,"mean":269636.0,"min":188441.0,"of":194,"rank":22,"trend":"rising"}}