If you use condoms perfectly every single time you have sex, they’re 98% effective at preventing pregnancy. But people aren’t perfect, so in real life condoms are about 85% effective — that means about 15 out of people who use condoms as their only birth control method will get pregnant each year. Aug 12, · Correctly using male condoms and other barriers like female condoms and dental dams, every time, can reduce (though not eliminate) the risk of sexually transmitted diseases (STDs), including human immunodeficiency virus (HIV) and viral hepatitis.
Laboratory studies have shown that latex condoms provide an effective barrier against even the smallest STD pathogens. Epidemiologic studies that compare rates of HIV infection between condom users and nonusers who have HIV-infected sex partners demonstrate that consistent condom use is highly effective in preventing transmission of HIV. How well a condom works depends a lot on whether you use it the right way. When used properly, male condoms are about 98% effective at preventing pregnancy. This means that in one year, 2 out of.