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There are 60,000 miles of blood vessels in every adult human.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
Illicit drug use costs the United States approximately $181 billion every year.
More than 4.4billion prescriptions were dispensed within the United States in 2016.
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