Infection by genital HPV (human papillomavirus) is very common. At least half of people who are sexually active will contract the HPV virus at some point in their lives. Yet many will not know it and have no symptoms.
Whether symptoms occur or not can depend on the type of HPV virus involved in the infection. There are more than 100 types of HPV. Some HPV types are associated with genital warts, although the warts are not always visible.