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The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.