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Everyone has one nostril that is larger than the other.
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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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Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.