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CDC Centers for Disease Control and Prevention - Your Online Source for Credible Health Information

The leading source for trustworthy and timely health and medical news and information. Providing credible health information, supportive community, and educational services by blending award-winning expertise in content, community services, expert co...

STD symptoms and treatment info. Important STD information pictures and STD facts.

Trusted medical information to encourage healthy living. Enjoy free health tools and view detailed doctor-reviewed information about diseases, medical symptoms, treatments, drugs, and nutrition.

wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual. Our multilingual how to manual has free step-by-step instructions on how to do all types of things.

Health information for consumers on first aid for medical emergencies, accidents and injuries, symptoms and treatment of disease and health conditions, and physical and the emotional well-being that contribute to general wellness.

Detailed worldwide HIV/AIDS information focusing on regional and global responses to the epidemic. Avert.org also provides HIV and AIDS facts, advice and sex education for people of all age groups.

The National Library of Medicine (NLM), on the campus of NIH in Bethesda, Maryland, is the world

Mayo Clinic — Comprehensive medical diagnosis and treatment; locations and services; request an appointment.