{"entity":{"iso2":"WS","iso3":"WSM","name":"Samoa","slug":"samoa"},"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":"2016-01-01","value":352.92},{"date":"2017-01-01","value":1109.03},{"date":"2018-01-01","value":3146.58},{"date":"2019-01-01","value":1417.2},{"date":"2020-01-01","value":237.52},{"date":"2021-01-01","value":1343.43},{"date":"2022-01-01","value":1306.4},{"date":"2023-01-01","value":772.8}],"summary":{"latest_period":"2023-01-01","latest_value":772.8,"max":3146.58,"mean":1210.73,"min":237.52,"of":194,"rank":150,"trend":"volatile"}}