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Persistence of anti-ZIKV neutralizing IgM. The seroreversion curve with 95% CI was calculated by parametric lognormal survival model fitted with data of all 17 individuals in the study. The day of initial NAT detectability was imputed for each individual using viral RNA loads at index and a previously determined ZIKV RNA doubling time in plasma (32). The median line indicates loss of detectable neutralizing IgM among 50% of individuals.
