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Objective: To evaluate a treponemal enzyme-linked immunosorbent assay (ELISA) as an alternative screening test for syphilis in pregnant women., Methods: A cross-sectional study of diagnostic test accuracy was carried out in a large volume laboratory from a tertiary care center. A total of 416 serum samples, including 102 archived syphilis Treponema pallidum hemagglutination (TPHA)-positive samples and 314 samples from pregnant women, were used to determine the sensitivity and specificity of ELISA. All the samples were subjected to Venereal Disease Research Laboratory (VDRL), rapid plasma reagin (RPR), ELISA, and TPHA tests. Performance characteristics of VDRL, RPR, and ELISA were calculated with TPHA as a reference standard test., Results: VDRL and RPR exhibited higher false positivity of 10.5% and 9.6%, respectively, compared to 2.5% by ELISA. The sensitivity and specificity of ELISA were 98% and 97.5%, of VDRL were 71.6% and 89.5%, and of RPR were 73.5% and 90.5%, respectively. Moreover, ELISA had an excellent agreement (kappa=0.9) with TPHA compared to VDRL/RPR which had a moderate agreement (kappa=0.6) only., Conclusion: ELISA has the potential to replace VDRL/RPR as a screening test for syphilis in centers that can perform ELISA, especially for antenatal screening., (© 2020 International Federation of Gynecology and Obstetrics.)

Objective: To determine the prevalence of syphilis in pregnancy and to assess the effect of syphilis on maternal and perinatal outcomes., Methods: In a retrospective study, data were reviewed for pregnant women who tested positive for syphilis during routine prenatal screening at a center in India between January 2011 and December 2015. Women with both a positive venereal disease research laboratory (VDRL) test and a positive Treponema pallidum hemagglutination assay (TPHA) were considered to have syphilis, and their maternal and fetal outcomes were assessed., Results: Among 51 164 pregnant women who underwent VDRL testing during the study period, 343 women were VDRL-positive (seropositivity rate 0.7%) and 18 were both VDRL- and TPHA-positive and were considered to have syphilis (seropositivity rate <0.1%). Among these 18 women, there were two stillbirths, four preterm births, and five small-for-gestational-age neonates., Conclusion: Although the prevalence of syphilis was low in the study population, women who were affected had adverse perinatal outcomes. Routine screening of all pregnant women for syphilis as early as possible in pregnancy, with appropriate treatment and follow-up of affected women and newborns, should be done to reduce adverse pregnancy outcomes., (© 2017 International Federation of Gynecology and Obstetrics.)