{"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-per-capita","source":"Statizoid (derived)","source_url":null,"title":"Pertussis - number of reported cases, per capita","unit":"units per person"},"observations":[{"date":"1979-01-01","value":0.000444271},{"date":"1980-01-01","value":0.000494791},{"date":"1981-01-01","value":0.000625648},{"date":"1982-01-01","value":0.000418112},{"date":"1983-01-01","value":0.000497465},{"date":"1984-01-01","value":0.000442008},{"date":"1985-01-01","value":0.000449918},{"date":"1986-01-01","value":3.29902e-05},{"date":"1987-01-01","value":5.95344e-05},{"date":"1988-01-01","value":2.54161e-06},{"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":3.60092e-06},{"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":0.000625648,"mean":0.000204169,"min":0.0,"of":204,"rank":136,"trend":"volatile"}}