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Did you know?
Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
Did you know?
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.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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Everyone has one nostril that is larger than the other.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.