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Vaccines prevent between 2.5 and 4 million deaths every year.
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A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.