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By Mayo Clinic staffCondoms are an effective form of birth control. However, about 1 in 50 couples who use condoms correctly will get pregnant in a year. Chances of pregnancy increase if you don't always wear a condom during intercourse, or you use condoms incorrectly.
Although there is still some risk for getting or transmitting STDs, condoms are very effective at preventing the transmission of most STDs. When used correctly, a condom creates a barrier that limits your exposure — and your partner's exposure — to semen or other body fluids that can carry STDs.
- Warner L, et al. Male condoms. In: Hatcher RA, et al. Contraceptive Technology. 19th ed. New York, N.Y.: Ardent Media; 2007:297.
- Flannagan J. Promoting sexual health: Practical guidelines on male condom use. Nursing standard. 2008;21:67.