{"entity":{"iso2":"SL","iso3":"SLE","name":"Sierra Leone","slug":"sierra-leone"},"indicator":{"licence":"CC BY-NC-SA 3.0 IGO (WHO)","slug":"pertussis-number-of-reported-cases","source":"World Health Organization, Global Health Observatory","source_url":"https://www.who.int/data/gho/data/indicators/indicator-details/GHO/WHS3_43","title":"Pertussis - number of reported cases","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":"2000-01-01","value":0.0},{"date":"2003-01-01","value":0.0},{"date":"2007-01-01","value":0.0},{"date":"2011-01-01","value":23.0},{"date":"2021-01-01","value":0.0},{"date":"2025-01-01","value":0.0}],"summary":{"latest_period":"2025-01-01","latest_value":0.0,"max":2089.0,"mean":699.059,"min":0.0,"of":210,"rank":137,"trend":"volatile"}}