{"entity":{"iso2":"SL","iso3":"SLE","name":"Sierra Leone","slug":"sierra-leone"},"indicator":{"licence":"Derived by Statizoid from the sources named on the page","slug":"pertussis-number-of-reported-cases-gaps-filled","source":"Statizoid (derived)","source_url":null,"title":"Pertussis - number of reported cases, gaps filled","unit":null},"observations":[{"date":"1979-01-01","value":1425.0},{"date":"1980-01-01","value":1619.0},{"date":"1981-01-01","value":2089.0},{"date":"1982-01-01","value":1425.0},{"date":"1983-01-01","value":1732.0},{"date":"1984-01-01","value":1573.0},{"date":"1985-01-01","value":1637.0},{"date":"1986-01-01","value":123.0},{"date":"1987-01-01","value":228.0},{"date":"1988-01-01","value":10.0},{"date":"1997-01-01","value":0.0},{"date":"1998-01-01","value":0.0},{"date":"1999-01-01","value":0.0},{"date":"2000-01-01","value":0.0},{"date":"2001-01-01","value":0.0},{"date":"2002-01-01","value":0.0},{"date":"2003-01-01","value":0.0},{"date":"2004-01-01","value":0.0},{"date":"2005-01-01","value":0.0},{"date":"2006-01-01","value":0.0},{"date":"2007-01-01","value":0.0},{"date":"2008-01-01","value":5.75},{"date":"2009-01-01","value":11.5},{"date":"2010-01-01","value":17.25},{"date":"2011-01-01","value":23.0},{"date":"2021-01-01","value":0.0},{"date":"2022-01-01","value":0.0},{"date":"2023-01-01","value":0.0},{"date":"2024-01-01","value":0.0},{"date":"2025-01-01","value":0.0}],"summary":{"latest_period":"2025-01-01","latest_value":0.0,"max":2089.0,"mean":397.283,"min":0.0,"of":210,"rank":137,"trend":"volatile"}}