{"entity":{"iso2":"MG","iso3":"MDG","name":"Madagascar","slug":"madagascar"},"indicator":{"licence":"Derived by Statizoid from the sources named on the page","slug":"pertussis-number-of-reported-cases-annual-growth-rate","source":"Statizoid (derived)","source_url":null,"title":"Pertussis - number of reported cases, annual growth rate","unit":"% change on previous year"},"observations":[{"date":"1977-01-01","value":242.766},{"date":"1978-01-01","value":4.656},{"date":"1979-01-01","value":18.2301},{"date":"1980-01-01","value":-26.3379},{"date":"1981-01-01","value":-2.66506},{"date":"1982-01-01","value":37.2658},{"date":"1983-01-01","value":-51.8252},{"date":"1984-01-01","value":-52.3335},{"date":"1985-01-01","value":25.6778},{"date":"1986-01-01","value":-56.4602},{"date":"1987-01-01","value":-18.5906},{"date":"1988-01-01","value":-45.3111},{"date":"1989-01-01","value":-30.3792},{"date":"1990-01-01","value":-21.0776},{"date":"1996-01-01","value":-19.2971},{"date":"1997-01-01","value":-36.1045},{"date":"1998-01-01","value":44.7336},{"date":"1999-01-01","value":177.74},{"date":"2000-01-01","value":19.6054},{"date":"2001-01-01","value":-97.3196},{"date":"2003-01-01","value":230.354},{"date":"2004-01-01","value":-62.9223},{"date":"2010-01-01","value":-100.0},{"date":"2012-01-01","value":-91.0569},{"date":"2013-01-01","value":-42.4242},{"date":"2016-01-01","value":-22.276},{"date":"2017-01-01","value":-100.0},{"date":"2019-01-01","value":27.2222},{"date":"2020-01-01","value":-100.0},{"date":"2022-01-01","value":230.702},{"date":"2023-01-01","value":-67.374},{"date":"2024-01-01","value":-8.13008},{"date":"2025-01-01","value":56.6372}],"summary":{"latest_period":"2025-01-01","latest_value":56.6372,"max":242.766,"mean":1.93045,"min":-100.0,"of":191,"rank":19,"trend":"volatile"}}