alexa Longer term efficacy of a prophylactic monovalent human papillomavirus type 16 vaccine.
Psychiatry

Psychiatry

Clinical Depression

Author(s): RowhaniRahbar A, Mao C, Hughes JP, Alvarez FB, Bryan JT,

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Abstract We conducted an extended follow-up study (March 2006-May 2008) to assess the longer term efficacy of a prophylactic monovalent human papillomavirus (HPV) type 16 L1 virus-like particle vaccine in women (n=290) who had enrolled in a randomized controlled trial of this vaccine (October 1998-November 1999) in Seattle and remained HPV-16 DNA negative during the course of that trial. During the extended follow-up period, in the per-protocol susceptible population, none of the vaccine recipients was found to be infected with HPV-16 or developed HPV-16-related cervical lesions; among placebo recipients, 6 women were found to be infected with HPV-16 (vaccine efficacy [VE]=100\%; 95\% confidence interval [CI]: 29-100\%) and 3 women developed HPV-16-related cervical lesions (VE=100\%; 95\% CI: <0-100\%). Approximately 86\% of vaccine recipients remained HPV-16 competitive Luminex immunoassay seropositive at an average of 8.5 years of follow-up. During the combined original trial and extended follow-up period, in the intention-to-treat population, 20 and 22 women developed any cervical lesion regardless of HPV type among the vaccine and placebo recipients, respectively (VE=15\%; 95\% CI: <0-56\%). The results suggest that this monovalent HPV-16 vaccine remains efficacious through 8.5 years after its administration.
This article was published in Vaccine and referenced in Clinical Depression

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