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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.
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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.