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Vaccines prevent between 2.5 and 4 million deaths every year.
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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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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

