Abstract
To describe the mean time of decrease of T. gondii IgG titers in uninfected infants exposed in utero to toxoplasmosis. A retrospective cohort study was conducted between 2008-2017, among infants under 12 months and exposed in utero to toxoplasmosis. Serial monthly monitoring of serum IgG titers were done till undetectable levels. 240 infants with mean gestational age at diagnosis of 19.2 weeks were included in the study. The mean (range) time for IgG level to become undetectable was 7.9 (0.8-25.0) months. 14 infants became negative between 13-24 months. Majority of asymptomatic infants exposed in utero to T. gondii become seronegative before 12 months of age.
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