HPV is a sexually transmitted disease caused by human papillomavirus (HPV) infection and is mainly manifested as proliferative damage in the anal genital area. The most common types of HPV that cause warts are 6, 11, etc. HPV can easily survive and reproduce in warm and humid conditions in the body, so the external genitalia and perianal area are the most susceptible sites for infection. The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things. Indirect contact transmission A small number of patients can develop the disease by contacting objects used by the patient, such as bath tubs, underwear, bath towels, toilet rings, underwear, etc. 3.Sexual contact transmission is the most important way of transmission. Therefore, the disease is easy to occur in people with disordered sexual relations.