Expert answer:
The effectiveness of condoms in preventing pregnancy is 98%. This means that if the condom is used correctly, since the beginning of penetration, the probability of the woman becoming pregnant is only 2%.
However, if the condom to burst, its effectiveness falls to 0%. Therefore, during the relationship, it is important to check the integrity of the relationship. If it does happen, stop sex and put on a new condom.
Although not 100% effective, condoms are considered a safe method of contraception and serve as a barrier against infectious agents that cause sexually transmitted diseases.
