Disease Estimation

WHO Congenital Syphilis (CS) Estimation Tool

World Health Organization, Last Updated September 2020

The WHO Congenital Syphilis (CS) Estimation Tool was developed as a tool for countries to estimate current and historical CS case numbers, case rates and adverse birth outcomes, and to look at future trends in congenital syphilis cases under different scenarios of antenatal care coverage and maternal syphilis testing and treatment. It can also be used to estimate benzathine benzylpenicillin requirements for maternal syphilis treatment (1 dose of 2.4 million units of BPG per seropositive woman). The Tool builds on the methods used by WHO to estimate global congenital syphilis.