Fig 3. Efficacy of the wMel intervention against suspected dengue notified to the routine disease surveillance system in the partially or fully wMel-treated period compared to the untreated period.

Point estimates (symbols) and 95% confidence intervals (horizontal bars) from interrupted time series analysis of monthly dengue case notifications to the routine surveillance system. Efficacy is expressed as 100x(1-IRR). wMel exposure was defined as ‘untreated’ prior to wMel releases, ‘partially treated’ if wMel releases were ongoing or completed but not stably at ≥60% wMel, and ‘fully treated’ if releases were completed and stably at ≥60% wMel.