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

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

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National Vaccine Information Center is a non-profit organization dedicated to giving health vaccine information and preventing vaccine injuries and deaths.

Get the facts and the answers you seek about vaccines and immunizing yourself or your family against infectious diseases.

Get the latest and current health news and information from the best natural health source provider Dr. Joseph Mercola. Subscribe for FREE to one of the world

If you are a first time visitor to this website, this home page will give you a brief summary of many of the major topics covered. I

The History of Vaccines explores the role of immunization in the human experience and examines its continuing contributions to public health.

Updated 8 August 2011

NPR delivers breaking national and world news. Also top stories from business, politics, health, science, technology, music, arts and culture. Subscribe to podcasts and RSS feeds.

Find information from BabyCenter on pregnancy, children's health, parenting & more, including expert advice & weekly newsletters that detail your child's development.

The New England Journal of Medicine (NEJM) is a weekly general medical journal that publishes new medical research and review articles, and editorial opinion on a wide variety of topics of importance to biomedical science and clinical practice.