What are the causes genital warts?

About genital warts, many people say this is a dirty disease, people suffering from genital warts will be said to be very clean person. Since this disease also causes a lot of family discord, and even some family break. Some patients feel a deep sense of inferiority and self-blame in life. Let's say that the cause of genital warts is.
The cause of genital warts:
Genital warts disease, contagious, so, its mode of transmission more necessary to understand.
1, sexual contact
This is the main route of transmission. HPV by means of sexual contact, through the damaged skin and mucous membrane infections. Survey data show that genital warts can occur in sexually active 20-40 year-old crowd, many or most people have extramarital dirty history of sexual promiscuity. According to research the average in three and a half months after the infection is most contagious. In addition to the direct vaginal and anal sex, oral sex, etc. can also infect.
2. indirect contact transmission
Through daily necessities such as underwear, bath tub, towels and other infections. When men suffer from Balanitis or Women suffering from fungal vaginitis or trichomoniasis vaginitis, etc., partial impregnation, wet it is HPV vaccination, provided favorable conditions for the breeding of reproduction. Scratching genitals with contaminated hands or contaminated towel can cause genital warts infection. There are visible, such as anal, oral, axillary, scalp, ear canal and so when the disease cases occur in the genital parts of the body outside, especially when the skin and mucous membrane contact area has a small wound vulnerable to infection. While it is true clinical cases of infection can be seen even by scratching through the toilet, etc., etc., including the children's cases, but these are in the minority, the daily contact is not so terrible risk.
3, mother to child transmission

Due to changes in hormone levels during pregnancy, genital blood supply rich, have decreased immune function, so genital warts can be increased quickly, even to the extent of blocking the birth canal. Wart prone to tearing during childbirth bleeding, because of its fragile organization, will suture to stop bleeding difficult. Infant genital warts or laryngeal papillomatosis and genital warts in some children, it may be during childbirth fetus through the birth canal, or in close contact with the mother after the birth of infection. Due to rapid growth during pregnancy genital warts, caused trouble to the late treatment, it is recommended that pregnancy be sure to check genital warts.