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Human papilloma virus

Human papillomavirus infection
Synonyms Human papillomavirus
PDB 1svm EBI.jpg
Papillomavirus large T antigen helicase domain
Classification and external resources
Specialty Infectious disease, gynecology
ICD-10 B97.7
ICD-9-CM 078.1 079.4
DiseasesDB 6032
eMedicine med/1037
MeSH D030361
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Human papillomavirus infection
Papilloma Virus (HPV) EM.jpg
TEM of papillomavirus
Virus classification
Group: Group I (dsDNA)
Order: Unassigned
Family: Papillomaviridae
Genera

Alphapapillomavirus
Betapapillomavirus
Gammapapillomavirus
Mupapillomavirus
Nupapillomavirus


Human papillomavirus infection is an infection by human papillomavirus (HPV). Most HPV infections cause no symptoms and resolve spontaneously. In some, they persist and result in warts or precancerous lesions. The precancerous lesions increase the risk of cancer of the cervix, vulva, vagina, penis, anus, mouth, or throat. Nearly all cervical cancer is due to HPV with two types, HPV16 and HPV18, accounting for 70% of cases. Between 60 and 90% of the other cancers are also linked to HPV. HPV6 and HPV11 are common causes of genital warts and respiratory papillomatosis.

HPV infection is caused by a human papillomavirus, a DNA virus from the papillomavirus family, of which over 150 types are known. More than 40 types are transmitted through sexual contact and infect the anus and genitals. Risk factors for persistent HPV infections include early age of first sexual intercourse, multiple partners, smoking, and poor immune function. HPV is typically spread by sustained direct skin-to-skin contact with vaginal and anal sex being the most common methods. Occasionally, it can spread from a mother to her baby during pregnancy. It does not spread via common items like toilet seats. People can become infected with more than one type of HPV. HPV only affects humans.


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