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Did you know?
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.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
Did you know?
Everyone has one nostril that is larger than the other.
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There are 60,000 miles of blood vessels in every adult human.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.