Quiz|Articles|April 17, 2026

Primary Care Quiz: 5 Questions on Latest STI Trends by Population

Test your knowledge of 2024 CDC STI data on high-risk populations and what it means for your screening decisions.

The burden of sexually transmitted infections (STIs) in the US remains substantial. According to the 2024 CDC STI surveillance data, more than 2.2 million cases of chlamydia, gonorrhea, and syphilis were reported in the US.1,2 Although the report suggested modest declines in overall STI morbidity, long-term trends continue to show a higher burden compared with a decade ago, underscoring the need for sustained clinical vigilance in primary care.

The 2024 CDC STI surveillance data tell a story not just about infections, but about populations — who is being reached by prevention and treatment efforts, who is being left behind, and where primary care can make the most difference. Today's final STI Awareness Week quiz challenges you to think beyond the aggregate numbers and consider the patients in your own waiting room.

In 2024, what percentage of primary and secondary syphilis cases occurred among men who have sex with men (MSM)?


References:

  1. Centers for Disease Control and Prevention. Sexually Transmitted Infections Surveillance, 2024 (Provisional). Atlanta, GA: US Department of Health and Human Services; 2025.
  2. Centers for Disease Control and Prevention. CDC Releases 2024 National STI Data. News release. September 24, 2025. Accessed April 17, 2026. https://www.cdc.gov/nchhstp/director-letters/release-2024-sti-data.html

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