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Merck Manual: Sexually Transmitted Diseases & Infections

A medical online manual that introduces and describes various sexually transmitted infections.

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Introduction: Sexually Transmitted Diseases (STD)

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Information on this site is provided for educational purposes. It is not meant to and cannot substitute for advice or care provided by an in-person medical professional. The information contained herein is not meant to be used to diagnose or treat a health problem or disease, or for prescribing any medication. You should always consult your own healthcare provider if you have a health problem or medical condition.