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Calculated incidence (λ(t)S(t)) calculated using equation (1) (line) and applied to model (3) superimposed on the observed number of ZIKV infections in FP when a 5 : 1 ratio between asymptomatic (non-reported cases included) and symptomatic (reported) cases was considered (see explanation in the main text). The goodness of fit measures were Akaike Information Criterion, AIC = 28·95; Mean Square Error, MSE = 346·194; and R-square, R2 = 0·95.
