STD Surveillance Data

Preliminary data show 2.5 million reported cases of chlamydia, gonorrhea, and syphilis in 2021.

STDs continued to increase during the second year of the COVID-19 pandemic, with no signs of slowing. This page presents preliminary STD surveillance data for chlamydia, gonorrhea, syphilis, and congenital syphilis. These data include cases reported to CDC through the National Notifiable Diseases Surveillance System (as of July 7, 2022), STD Surveillance Network (as of June 15, 2022), and Gonococcal Isolate Surveillance Project (as of June 23, 2022), and are considered preliminary as 2021 STD surveillance data will continue to be reported to CDC through the fall of 2022. Final 2021 data, including STD case counts and rates for states and territories, will be provided in the forthcoming 2021 STD Surveillance Report. Until then, the most current complete data for chlamydia, gonorrhea, and syphilis are available in Sexually Transmitted Disease Surveillance, 2020.