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November 10, 2004

When does a vasectomy become effective?

How soon after a vasectomy procedure can a man rely on it for contraception?

1. 1 month
2. 2 months
3. 3 months
4. after 30 ejaculations
5. after 100 ejaculations
6. after 3 months or 30 ejaculations, whichever comes first.

c.) 3 months- according to the latest Selected Practice Recommendations from WHO. (Previously some guidelines had recommended a certain number of ejaculations, but this is no longer the case.)

During the 3 month period, men should continue sexual activity, but need to use additional contraceptive protection.

In addition, semen analysis, where available can confirm contraceptive protection after the 3-month waiting period.

References:
WHO's New Second Edition of the Selected Practice Recommendations for Contraceptive Use as of 11/10/04.

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The "Pearls" offer answers to commonly asked questions about family planning. These "Pearls" are prepared by Dr. James D. Shelton, Senior Medical Scientist, Office of Population, United States Agency for International Development (USAID)

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