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What is normal sperm count for successful fertilization in human?
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Sperm count, or sperm concentration to avoid confusion with total sperm count, measures the concentration of sperm in a man’s ejaculate, distinguished from total sperm count, which is the sperm count multiplied with volume. Over 15 million sperm per milliliter is considered normal, according to the WHO in 2010. Older definitions state 20 million. The average sperm count today is between 20 and 40 million per milliliter in the Western world, having decreased by 1-2% per year from a substantially higher number decades ago.