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Home : Diagnostic References : Sexually Transmitted Diseases : Genito-Anal Papilloma Virus Infections
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Genito-Anal Papilloma Virus Infections

last revised : March, 1999

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Mainly by sexual contact transmittable infection, caused by HPV, a small DNA virus (image 1). HPV infects cornified and non-cornified as well as transitional epithelia.

  • Human papilloma virus (HPV), wart virus
  • Genital warts, anal warts
  • Condylomata acuminata
  • Venereal warts, moist warts, flat warts

Approximately 100 HPV types have been identified by gene sequencing or PCR. Approximately 40 HPV types have been detected in the lower genital tract, most commonly types 6 and 11, which are also characteristically found in oral and laryngeal papillomata. Genital HPV types have been classified in three risk groups, according to the strength of association with genital neoplasia, i.e. low risk (HPV 6/11), intermediate risk (HPV 31/33/35), and high risk types (HPV 16/18).

Incubation Period

Typically two to four months, but often ranges from two weeks to eight months. Some infected patients may not develop visible warts or flat warts for many years.

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