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Human papillomavirus vaccines. What we must know?

Vaccines against human papillomavirus (HPV) are already available for use. There are two of them: bivalent, that provokes immunity against oncogenic types 16 and 18, the most involved in anogenital and oropharyngeal carcinomas, and the quadrivalent, that includes these types and the non-oncogenic types 6 and 11, responsible for most of anogenital warts. They are indicated for women from 10 to 25 years old, before sexual life beginning or to those that did not have been infected with HPV types of the vaccines. These vaccines have no therapeutic effects against pre-existing HPV infections and HPV-associated lesions. They can be used in immunosuppressed persons, in those who are breast feeding, but are contra-indicated during pregnancy. Their use in males, with the same indications, is already approved by the north-american FDA (Food and Drugs Administration), but not yet by ANVISA (Agência Nacional de Vigilância Sanitária), the correspondent Brazilian governmental agency. For those infected by vaccines enrolled viral types, therapeutic vaccines, nowadays in test in several controlled trials, remain a hope for a future effective treatment.

Papillomavirus infections; Intra-epithelial neoplasia; prevention and control; Papillomavirus, vaccine; Carcinoma, squamous cell


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