The reported number of nationally notifiable sexually transmitted diseases decreased in March to April 2020 during the US COVID-19 pandemic; however, resurgence of some reported sexually transmitted disease cases occurred later in 2020. Supplemental digital content is available in the text.

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PrefaceSexually Transmitted Disease Surveillance 2018 presents statistics and trends for STDs in the United States through 2018. This annual publication is intended as a reference document for policy makers, program managers, health planners, researchers, and others who are concerned with the public health implications of these diseases. The figures and tables in this edition supersede those in earlier publications of these data.The surveillance information in this report is based on the following sources of data: (1) notifiable disease reporting from state and local STD programs; (2) projects and programs that monitor STDs in various settings, including the National Job Training Program, the STD Surveillance Network, and the Gonococcal Isolate Surveillance Project; and (3) national surveys and other data collection systems implemented by federal and private organizations.