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  1. Sexually transmitted diseases (STDs) - Symptoms and causes - Mayo Clinic

    They are spread mainly by sexual contact. STIs are caused by bacteria, viruses or parasites. A sexually transmitted infection may pass from person to person in ...

  2. Sexual health STD prevention - Mayo Clinic

    STIs are also called sexually transmitted diseases (STDs). You often can't tell if someone has an STI. Many STIs cause no symptoms. In fact, many people who ...

  3. Sexually transmitted diseases (STDs) - Diagnosis and treatment - Mayo Clinic

    Testing for an STD or sexually transmitted infection in someone who doesn't have symptoms is called screening. Most of the time, STI screening is not a routine ...

  4. Gonorrhea - Symptoms and causes - Mayo Clinic

    Gonorrhea is a sexually transmitted infection, also called a sexually transmitted disease, caused by bacteria. Sexually transmitted diseases are infections ...

  5. Sexual health Women's sexual health - Mayo Clinic

    Having healthy relationships. Planning pregnancies. Preventing diseases. It's vital to know about sexual health and what it takes to have a good sex life. And ...

  6. 全美医院

    唯有准确诊断，方可有效治疗。我们的专家诊断并治疗最具有挑战性的医学难题。 全美排名，名列前茅. 根据《美国新闻与世界报道》，妙 ...