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Vaccines work: 6 diseases you don’t get because of vaccines



From the introduction of the smallpox vaccine in the 19th century to the mass availability of flu vaccines today, vaccines have helped millions of people develop immunity to some of the most deadly diseases in the world.

Thanks to vaccines, many infectious diseases, such as smallpox and polio, no longer exist outside of laboratories in the United States. Their prolonged elimination has led researchers to work on creating new types of immunizations that could help people avoid other life-changing diseases.

Here are six once common diseases that you no longer need to worry about thanks to vaccines.


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