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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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.
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The horizontal fraction bar was introduced by the Arabs.
Meteor Crater
Mosaic glass bowl, fused and slumped, Roman.
A hole in the muffler allows condensed water to escape.
Experimental Apparatus Glass Distillation Column
Photosynthesis: How Glucose Is Made During photosynthesis, the leaves of green plants absorb