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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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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Medication errors are more common among seriously ill patients than with those with minor conditions.