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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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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.