How It Works. How It Works Tubal Ligation . Sterilization for women involves mechanically blocking the fallopian tubes to prevent the sperm and egg from uniting. Vasectomy is the male sterilization operation that blocks the vasa deferentia to prevent the passage of sperm into the ejaculated seminal fluid. A single decision and one simple surgical procedure provide permanent contraception.
Sterilization is one of the safest, most effective, and most cost-effective contraceptive methods.
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