title: Prevention of herpes genitalis by the 'Bulgarian' vaccine F.HSV-2V(PRK): preliminary clinical evidence.
abstract: OBJECTIVE
  To examine the antigenic properties of the formalin-inactivated herpes simplex virus type 2 (HSV-2) virus-particle vaccine F. HSV-2V(PRK), which has been used therapeutically in Bulgaria for 30 years, and to make preliminary assessment of its potential protective efficacy by a follow-up of vaccinated patients with herpes genitalis.
  
  
  METHODS
  Properties of the vaccine were examined by standard immunological laboratory tests. Fifty-five patients at risk of herpes genitalis received 2-4 vaccinations and were monitored during a 6-year follow-up.
  
  
  RESULTS
  The vaccine was antigenic in laboratory tests and absorbed neutralizing antibody from hyperimmune rabbit serum against herpes simplex virus type 1 (HSV-1). In vaccinated patients, there was an overall contraction rate of herpes genitalis of 5.4%. There was no evidence of significant local or generalized adverse effects from vaccination.
  
  
  CONCLUSIONS
  Bulgarian vaccine F.HSV-2V(PRK) may have protective efficacy, which, in association with its apparent safety from our findings and from its clinical use for over 30 years in Bulgaria, suggests that it should be scrutinized by a formal clinical trial.
authors.affiliation: Vaccine Research Trust, 22 Alcester Road, Moseley, Birmingham B13 8BE, UK.
authors.forename: G R
authors.initials: GR
authors.lastname: Skinner
authors.forename: J A
authors.initials: JA
authors.lastname: Davies
authors.forename: S
authors.initials: S
authors.lastname: Dundarov
authors.forename: P
authors.initials: P
authors.lastname: Andonov
mesh_terms: D000293:Adolescent; D000328:Adult; D000818:Animals; D002031:Bulgaria; D006224:Cricetinae; D005260:Female; D005500:Follow-Up Studies; D006558:Herpes Genitalis / Q000517:prevention & control*; D022301:Herpes Simplex Virus Vaccines / Q000276:immunology*; D006801:Humans; D007158:Immunologic Techniques; D008297:Male; D008875:Middle Aged; D011817:Rabbits
chemical_list: D022301:Herpes Simplex Virus Vaccines