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  1. About Sexually Transmitted Infections (STIs) | STI | CDC

    Mar 25, 2024 · Sexually transmitted infections (STIs), also known as sexually transmitted diseases (STDs), are very common. Millions of new infections occur every year in the United States.

  2. Sexually transmitted diseases (STDs) - Symptoms and causes

    Sexually transmitted diseases (STDs) are caused by sexually transmitted infections (STIs). They are spread mainly by sexual contact. STIs are caused by bacteria, viruses or parasites. A sexually …

  3. What’s an STI vs. STD? - Cleveland Clinic Health Essentials

    Nov 29, 2022 · “Sexually transmitted infection” (STI) and “sexually transmitted disease” (STD) refer to the same thing, but the term STI is more accurate and less stigmatizing.

  4. Sexually Transmitted Diseases (STDs): Causes, Tests, & Treatment - WebMD

    Oct 14, 2024 · STDs are sexually transmitted diseases. This means they are most often, but not exclusively, spread by sexual contact. STDs used to be called venereal diseases (VD). Doctors more …

  5. Sexually transmitted infection - Wikipedia

    A sexually transmitted infection (STI), also referred to as a sexually transmitted disease (STD) and the older term venereal disease (VD), is an infection that is spread by sexual activity, especially vaginal …

  6. What Are STDs? 8 Common Types, Symptoms & List - MedicineNet

    Sexually transmitted diseases (STDs) are diseases that a person can get by having sex with someone who has an STD. STDs are the second most common infection seen in the United States, with about …

  7. Sexually transmitted diseases Guide: Causes, Symptoms and …

    Sep 26, 2024 · Sexually transmitted diseases (STDs) are infections that are spread from person to person through sexual contact, including oral sex, anal sex and the sharing of sex toys. These …

  8. Sexually Transmitted Infections | STIs | Venereal Disease | MedlinePlus

    Jul 15, 2025 · Sexually transmitted infections (STIs) are infections that are passed from one person to another through sexual contact. If not treated, a STI can develop into a sexually transmitted disease …

  9. Sexually Transmitted Diseases (STD): Complete Guide | Ada

    Jul 23, 2025 · STD stands for sexually transmitted disease. This is an umbrella term for a number of conditions that are caused by viruses, bacteria, and parasites that get transferred from one person to …

  10. STDs: What Should I Know? - Valley Health

    An STI, which stands for sexually transmitted infection, is what comes before an STD. As said before, these infections spread through sexual contact or an exchange of bodily fluids and often don’t cause …