title: Immunogenicity associated with the routine use of an influenza A H1N1 vaccine in health care personnel in Guangzhou, China.
abstract: We present immunogenicity data on the routine vaccination of 103 health care personnel during the 2009 H1N1 national vaccination campaign. The seroprotection rate (percentage of samples with hemagglutination inhibition titers of > or =1:40) was 83.2% at 30 days postvaccination, lower than those obtained in previously published controlled trials. Low baseline antibody levels and an increase in seroprotection in a negative-control cohort suggest that the virus remains prevalent.
authors.affiliation: Guangzhou Center for Disease Control and Prevention, Guangzhou, People's Republic of China.
authors.forename: Biao
authors.initials: B
authors.lastname: Di
authors.forename: Xinhong
authors.initials: X
authors.lastname: Xu
authors.forename: Tiegang
authors.initials: T
authors.lastname: Li
authors.forename: Enjie
authors.initials: E
authors.lastname: Lu
authors.forename: Jibin
authors.initials: J
authors.lastname: Wu
authors.forename: Yanhui
authors.initials: Y
authors.lastname: Liu
authors.forename: Yiyun
authors.initials: Y
authors.lastname: Chen
authors.forename: Sam
authors.initials: S
authors.lastname: Pickerill
authors.forename: Ming
authors.initials: M
authors.lastname: Wang
mesh_terms: D000328:Adult; D000914:Antibodies, Viral / Q000097:blood; D002681:China; D005260:Female; D006282:Health Personnel; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000276:immunology*; D007252:Influenza Vaccines / Q000276:immunology*; D007251:Influenza, Human / Q000517:prevention & control*; D008297:Male; D008875:Middle Aged
chemical_list: D000914:Antibodies, Viral; D007252:Influenza Vaccines