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Did you know?
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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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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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.