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An HPV infection is caused by the human papillomavirus, a DNA virus from the papillomavirus family. [8] [9] Over 200 types have been described. [10] An individual can become infected with more than one type of HPV, [11] and the disease is only known to affect humans.
Papillomaviridae is a family of non-enveloped DNA viruses whose members are known as papillomaviruses. [1] Several hundred species of papillomaviruses, traditionally referred to as "types", [2] have been identified infecting all carefully inspected mammals, [2] but also other vertebrates such as birds, snakes, turtles and fish.
HPV types 6 and 11 are responsible for causing majority of genital warts whereas HPV types 16, 18, 31, 33, and 35 are also occasionally found. [5] It is spread through direct skin-to-skin contact, usually during oral , manual , vaginal , or anal sex with an infected partner.
Even after accounting for female infertility, men with HPV in their semen had three-fold greater odds of being infertile than those without the virus. There are over 200 known strains of HPV. The ...
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Gardasil is an HPV vaccine for use in the prevention of certain strains of human papillomavirus (HPV). [10] [7] [8] [9] [11] It was developed by Merck & Co. [12] High-risk human papilloma virus (hr-HPV) genital infection is the most common sexually transmitted infection among women. [13]
These cancers take years to develop so the numbers were low: There were 57 HPV-related cancers among the unvaccinated men — mostly head and neck cancers — compared to 26 among the men who had ...
The human papillomavirus (HPV) is the most common STI in the United States. [64] There are more than 40 different strands of HPV and many do not cause any health problems. In 90% of cases, the body's immune system clears the infection naturally within two years. [65]