title: Seroprevalence of antibodies to avian influenza A (H5) and A (H9) viruses among market poultry workers, Hanoi, Vietnam, 2001.
abstract: BACKGROUND
  The frequency of avian influenza A virus infections among poultry workers is not well understood.
  
  
  METHODS
  A seroprevalence study of market poultry workers and persons without occupational poultry exposure was conducted during 2001 in Hanoi, Vietnam. Sera were tested for avian influenza H5 and H9 antibodies by microneutralization and Western blot assays.
  
  
  RESULTS
  Seroprevalence of H5 and H9 antibodies was 4% and 3% in poultry workers and 1% and 3.5% in non-poultry workers, respectively.
  
  
  CONCLUSIONS
  Seroprevalence of H5 and H9 antibodies was low among Hanoi market poultry workers in 2001, but can serve as a baseline for additional studies.
authors.affiliation: Influenza Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America. tuyeki@cdc.gov
authors.forename: Timothy M
authors.initials: TM
authors.lastname: Uyeki
authors.forename: Doan C
authors.initials: DC
authors.lastname: Nguyen
authors.forename: Thomas
authors.initials: T
authors.lastname: Rowe
authors.forename: Xiuhua
authors.initials: X
authors.lastname: Lu
authors.forename: Jean
authors.initials: J
authors.lastname: Hu-Primmer
authors.forename: Lien P
authors.initials: LP
authors.lastname: Huynh
authors.forename: Nguyen L K
authors.initials: NL
authors.lastname: Hang
authors.forename: Jacqueline M
authors.initials: JM
authors.lastname: Katz
mesh_terms: D000328:Adult; D000818:Animals; D000914:Antibodies, Viral / Q000097:blood* / Q000276:immunology*; D005260:Female; D006801:Humans; D053124:Influenza A Virus, H5N1 Subtype / Q000276:immunology / Q000472:pathogenicity; D053125:Influenza A Virus, H5N2 Subtype / Q000276:immunology / Q000472:pathogenicity; D053127:Influenza A Virus, H9N2 Subtype / Q000276:immunology / Q000472:pathogenicity; D009980:Influenza A virus / Q000276:immunology / Q000472:pathogenicity*; D007251:Influenza, Human / Q000097:blood / Q000453:epidemiology*; D008297:Male; D016273:Occupational Exposure / Q000706:statistics & numerical data; D011200:Poultry / Q000821:virology*; D016036:Seroepidemiologic Studies; D014744:Vietnam / Q000453:epidemiology; D055815:Young Adult
chemical_list: D000914:Antibodies, Viral