{"disease":"polio","iso3":"NGA","granularity":"year","metric":"cases_annual","generated_at":"2026-11-02T04:03:11+00:00","series":[{"source_id":"gho_WHS3_49","start_year":1980,"values":[816,335,395,392,625,959,453,606,1460,455,1873,842,957,1083,502,439,942,383,312,981,638,56,202,355,782,833,1144,356,866,543,48,96,130,57,36,1,5,0,34]}],"first_year":1980,"last_year":2018,"n_years":39,"latest":{"year":2018,"value":34},"peak":{"year":1990,"value":1873}}