title: Clinical follow-up of women infected with human papillomavirus-16, either alone or with other human papillomavirus types: identification of different risk groups.
abstract: OBJECTIVE
  Evaluation of the clinical impact of multiple infections of the cervix by human papillomavirus, including human papillomavirus-16, compared with single human papillomavirus-16 infection.
  
  
  METHODS
  One hundred sixty-nine women were classified in 3 categories depending on their human papillomavirus profile: human papillomavirus-16 only, human papillomavirus-16 and low-risk type(s), and human papillomavirus-16 and other high-risk type(s). Cervical brush samples were analyzed for human papillomavirus DNA by polymerase chain reaction and reverse line blot hybridization. All women were evaluated with colposcopy during 24 months or more. Management was according to the Bethesda recommendations.
  
  
  RESULTS
  Women infected with human papillomavirus-16 and other high-risk human papillomavirus type(s) presented more progression or no change in the grade of dysplasia, compared with women of the other groups (relative risk [RR], 1.39; 95% confidence interval [CI], 1.07-1.82; P = .02 at 6 months; RR, 2.10; 95% CI, 1.46-3.02; P < .001 at 12 months; RR, 1.82; 95% CI, 1.21-2.72; P = .004 at 24 months).
  
  
  CONCLUSIONS
  Coinfection of women with human papillomavirus-16 and other high-risk human papillomavirus type(s) increases the risk of unfavorable evolution.
authors.affiliation: Department of Obstetrics and Gynecology, University Hospital of Lausanne, Lausanne University, Lausanne, Switzerland.
authors.forename: Olivier
authors.initials: O
authors.lastname: Cottier
authors.forename: Roland
authors.initials: R
authors.lastname: Sahli
authors.forename: Anca
authors.initials: A
authors.lastname: Mihaescu
authors.forename: Pierre
authors.initials: P
authors.lastname: De Grandi
authors.forename: Michel
authors.initials: M
authors.lastname: Boulvain
authors.forename: Stefan
authors.initials: S
authors.lastname: Gerber
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003127:Colposcopy; D004279:DNA, Viral; D005260:Female; D005500:Follow-Up Studies; D005838:Genotype; D052162:Human papillomavirus 16 / Q000235:genetics*; D006801:Humans; D008875:Middle Aged; D027383:Papillomaviridae / Q000235:genetics; D030361:Papillomavirus Infections / Q000453:epidemiology* / Q000473:pathology; D012189:Retrospective Studies; D012307:Risk Factors; D002578:Uterine Cervical Dysplasia / Q000453:epidemiology / Q000473:pathology / Q000821:virology; D002583:Uterine Cervical Neoplasms / Q000453:epidemiology* / Q000473:pathology / Q000821:virology*; D014626:Vaginal Smears; D055815:Young Adult
chemical_list: D004279:DNA, Viral