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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.
There are 20 feet of blood vessels in each square inch of human skin.
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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