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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By definition, when a medication is administered intravenously, its bioavailability is 100%.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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