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Vaccines prevent between 2.5 and 4 million deaths every year.
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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.
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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.