title: Varicella Zoster antibodies among health care workers in a university hospital, Teheran, Iran.
abstract: OBJECTIVE
  This study was designed to evaluate the immune status of health care workers against varicella zoster in a university hospital in Teheran, Iran, and to compare the history of chickenpox infection with the presence of varicella antibodies in this population.
  
  
  METHODS
  Serologic testing for varicella was performed for 405 health care workers with different job categories and at different age. The enzyme immunoassay was used for determining IgG antibodies against varicella zoster virus.
  
  
  RESULTS
  A total of 405 health care workers, aged 19-50 years (median: 29 years), were examined. Of these, 289 (71.4%) were found to be seropositive. No statistically significant differences were observed between gender, age, or occupation, and seropositivity (p = 0.09, 0.75, 0.54. respectively). Statistical analysis revealed that the correlation between chickenpox history and seropositivity showed a 62.3% sensitivity, 72.4% specificity, 84.9% positive predictive value, and 43.5% negative predictive value.
  
  
  CONCLUSIONS
  Serologic screening of health care workers is essential to determine their immunity to varicella, regardless of the age, occupation and history of infection. This population is recommended to be considered a target group for future immunization programs in Iran.
authors.affiliation: Infectious Disease Department, Iran University of Medical Sciences, Teheran, Iran. mtalebitaher2000@yahoo.com
authors.forename: Mahshid
authors.initials: M
authors.lastname: Talebi-Taher
authors.forename: Maria
authors.initials: M
authors.lastname: Noori
authors.forename: Ahmad-Reza
authors.initials: AR
authors.lastname: Shamshiri
authors.forename: Mitra
authors.initials: M
authors.lastname: Barati
mesh_terms: D000328:Adult; D000914:Antibodies, Viral / Q000097:blood*; D002644:Chickenpox / Q000097:blood*; D003428:Cross Infection / Q000097:blood; D003430:Cross-Sectional Studies; D005260:Female; D006282:Health Personnel; D014645:Herpesvirus 3, Human / Q000276:immunology*; D006746:Hospital Bed Capacity, 500 and over; D006785:Hospitals, University; D006801:Humans; D007124:Immunoenzyme Techniques; D007492:Iran / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity; D012698:Serologic Tests; D055815:Young Adult
chemical_list: D000914:Antibodies, Viral