title: Prevalence of HPV infection by cervical cytologic status in Brazil.
abstract: OBJECTIVE
  To assess the prevalence of human papillomavirus (HPV) infection according to cervical cytologic status in northeastern Brazil; identify other risk factors for low- and high-grade squamous intraepithelial lesions (LSILs and HSILs); and identify the most prevalent HPV genotypes associated with the lesions.
  
  
  METHODS
  Two cervical smears were collected from 250 women referred for cancer screening, one for cytologic examination and the other to test for the presence of HPV by PCR with genotyping by dot blot hybridization.
  
  
  RESULTS
  There were 110 healthy cervices, 82 LSILs, and 58 HSILs. The overall HPV prevalence was 48%, with higher rates for HSILs, and HPV-16 was the most prevalent type. Age, multiple sexual partners, type of HPV present, smoking, and early onset of sexual activity were risk factors for cervical lesions.
  
  
  CONCLUSIONS
  Age, multiple sexual partners, and infection with HPV-16 increased the risk of having LSILs or HSILs. Early onset of sexual activity and smoking only increased the risk of having HSILs.
authors.affiliation: Department of Microbiology and Parasitology, Universidade Federal do Rio Grande do Norte, Natal-RN, Brazil. veris@cb.ufrn.br
authors.forename: José Veríssimo
authors.initials: JV
authors.lastname: Fernandes
authors.forename: Rosely de Vasconcellos
authors.initials: Rde V
authors.lastname: Meissner
authors.forename: Maria Goretti Freire
authors.initials: MG
authors.lastname: de Carvalho
authors.forename: Thales Allyrio Araújo de Medeiros
authors.initials: TA
authors.lastname: Fernandes
authors.forename: Paulo Roberto Medeiros
authors.initials: PR
authors.lastname: de Azevedo
authors.forename: Luisa Lina
authors.initials: LL
authors.lastname: Villa
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001938:Brazil / Q000453:epidemiology; D002584:Cervix Uteri / Q000166:cytology / Q000821:virology*; D005260:Female; D005838:Genotype; D052162:Human papillomavirus 16 / Q000302:isolation & purification*; D006801:Humans; D015151:Immunoblotting; D008875:Middle Aged; D027383:Papillomaviridae / Q000235:genetics / Q000302:isolation & purification; D030361:Papillomavirus Infections / Q000453:epidemiology* / Q000473:pathology / Q000821:virology; D016133:Polymerase Chain Reaction; D015995:Prevalence; D012307:Risk Factors; D012747:Sexual Partners; D012907:Smoking / Q000009:adverse effects; D002583:Uterine Cervical Neoplasms / Q000453:epidemiology / Q000473:pathology / Q000821:virology; D014626:Vaginal Smears; D055815:Young Adult; D002578:Uterine Cervical Dysplasia / Q000453:epidemiology / Q000473:pathology / Q000821:virology