Sexually Transmitted Infections (STIs)

Sexually transmitted infections (STIs) are very common.

CDC Health Topics A–Z 2 min read
This content is for informational purposes only. Always consult a healthcare professional.

Source: Centers for Disease Control and Prevention — Content from the Centers for Disease Control and Prevention (public domain).

4 different types of couples abstracted with pathogens of STIs and prevention-related concepts About What are STIs? How are they different from STDs? How are they transmitted? Learn More Mar 25, 2024 user viewing fact sheet on phone Fact Sheets Basic information about STIs in plain language, in question and answer form. Feb 12, 2025 a hand blocking the falling of tiles to prevent others from falling - metaphor for prevention Prevention How to prevent sexually transmitted infections (STIs). Apr 9, 2024 a young woman looking at a screen with her healthcare provider Testing STI testing type and frequency recommendations. Mar 17, 2026 Types of STIs Three diverse couples who are smiling and happy About Gonorrhea This page answers basic questions about gonorrhea, including how to prevent and treat it. Jan 31, 2025 A collage of diverse people, including a person who is pregnant, a couple, and a young person About Syphilis This page answers basic questions about syphilis, including how to prevent and treat it. Jan 30, 2025 * About Bacterial Vaginosis (BV) This page answers basic questions about bacterial vaginosis (BV), how to prevent and treat it. * About Chlamydia This page answers basic questions about chlamydia, including how to prevent and treat it. * About Genital Herpes This page answers basic questions about genital herpes, including how to prevent and treat it. * About Mycoplasma genitalium This page answers basic questions about Mycoplasma genitalium, or Mgen. * About Pelvic Inflammatory Disease (PID) This page answers basic questions about Pelvic Inflammatory Disease (PID) * About Trichomoniasis This page answers basic questions about Trichomoniasis), how to prevent and treat it Featured A woman with a handheld device and two monitors showing statistical content. STI Statistics Statistical reports of Sexually Transmitted Infections in the United States. Aug 26, 2024 Healthcare Provider with Patient Clinical Guidance Lists resources related to the screening and treatment of STIs. July 18, 2025 Public Health * Communication Resources STI prevention and sexual health communication materials for social media, websites, and campaigns * About STI Funding Information on STI funding milestones, accomplishments, and opportunities. * From the Director Letters from the Director of the Division of STD Prevention to public health colleagues. * Projects & Initiatives A list of NCHHSTP/DSTDP programs and initiatives * STI Program Resources Program management, evaluation, and outbreak response resources and tools for STI programs. * STI Training Explore resources, trainings, courses, webinars, and guidance about STIs for health professionals.

⚠ Caution
Medical Disclaimer: This information is for educational purposes only. Always consult a healthcare professional for medical advice.