But for those who have sexual intercourse, latex condoms are highly effective when used consistently and correctly. Protecting yourself and others against HIV is important because it is life threatening and has no cure. Laboratory studies show that latex condoms are effective barriers to HIV and other STDs. In addition, several studies provide compelling evidence that latex condoms are highly effective in protecting against HIV infection when used for every act of intercourse. In a 2-year study of discordant couples in Europe, among 124 couples who reported consistent use of latex condoms, none of the uninfected partners became infected.
Every latex condom manufactured in the United States is tested for defects before it is packaged.
During the manufacturing process, condoms are double-dipped in latex and tested electronically for holes. Most of the breakage and slippage likely is due to incorrect use rather than poor condom quality. Using oil-based lubricants can weaken latex, causing the condom to break. In addition, condoms can be weakened by exposure to heat or sunlight or by age, or they can be torn by teeth or fingernails. Some persons have expressed concern about studies that report higher failure rates among couples using condoms for pregnancy prevention.