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The genome of a novel human papillomavirus (HPV) type, HPV74, was cloned from an iatrogenically immunosuppressed woman with persisting low-grade vaginal intraepithelial neoplasia. HPV74 was found to be phylogenetically related to the low-risk HPV types 6, 11, 44, and 55. HPV74 or a variant of this type was found in specimens from three additional immunosuppressed women but not in about 3,000 anogenital specimens from immunocompetent patients.
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Longuet et al. (1996) studied this question.
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