Effect of the coverage of rapid tests for syphilis in primary care on the syphilis in pregnancy in Brazil.

There was a substantial improvement in the amount of rapid tests available, as well as a significant increase in the number of tests performed in pregnant women, which predicts an increase in syphilis rates in pregnant women. However, a worrying hypothesis is that the number of tests performed on pregnant women during the analyzed period may have been insufficient to detect the progress of the epidemic in this population.