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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Thyroid conditions may make getting pregnant impossible.
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The horizontal fraction bar was introduced by the Arabs.
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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Lynx-hare interactions have served as a model system for the study of the effects o
Heart Model
Critical Thinking Model
Model of a sequential study in which two cohorts were followed beginning at age 20. One cohort was f