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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
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Cyanide works by making the human body unable to use oxygen.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.