Contamination is primarily sexual. It occurs generally soon after the initial sexual encounter.
It is estimated that most often the first sexual contact usually takes place between 18 and 25 years old.
A study of young students has shown that nearly 70% contracted the Papilloma virus within 2 years of their first sexual contact.
This does not mean that 70% of them will develop a lesion on the cervix, but simply shows that the virus is very, very common and therefore any sexually active person can contract it.
Subsequently nearly 90% of those infected will eliminate the virus spontaneously after 2 to 3 years, without any treatment, thanks to their natural immunity.