Preliminary 2021 Data: Syphilis

Preliminary CDC data show that syphilis continues to increase in 2021.

This page presents preliminary data for primary and secondary syphilis among adults (the most infectious stages of the disease) and congenital syphilis in 2021. As the COVID-19 pandemic continues to cause reporting delays, these data reflect cases reported to CDC through the National Notifiable Diseases Surveillance System (NNDSS) as of March 2022. These data are considered preliminary as 2021 STD surveillance data will continue to be reported to CDC through fall of 2022. Final syphilis data will be provided in the 2021 STD Surveillance Report when it is released. Until then, the most current complete dataset for chlamydia, gonorrhea, and syphilis is available in Sexually Transmitted Disease Surveillance, 2020.

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Visual Abstract - Syphilis

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