Primary and Secondary Syphilis — Reported 2020 Cases as a Percentage of 2019 by MMWR Week, United States

Area graph showing weekly primary and secondary case counts in 2020 relative to the same week in 2019.

NOTE: The MMWR week is the week of the epidemiologic year for which the case is assigned by the reporting local or state health department.

Adapted from Pagaoa et al, _Sexually Transmitted Diseases_, 2021