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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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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.