Assessment of the Value of Rescreening for Syphilis in the Third Trimester of Pregnancy

Objectives. Our aim is evaluating the need for repeating tests for syphilis on pregnant women in the third trimester. Study design. A single-center retrospective cohort study was performed on all women delivering 7/03–6/04. Results. During the study interval, 2244 women delivered at our hospital. Of those women having available records and attending at least one prenatal visit, 1940 (98.9%) were screened for syphilis at the first prenatal visit. Of the 1627 women beginning prenatal care prior to 27 weeks and delivering after 32 weeks, 1377 (84.6%) were rescreened in the third trimester. No cases of syphilis were identified with either the initial (upper limit of 95% CI 0.24%) or repeat (upper limit of 95% CI 0.34%) screening. Conclusions. In our obstetric population, syphilis is so uncommon that mandated prenatal screening on more than one occasion seems unjustified and laws requiring repeated screening should be reevaluated.