title: Association between seasonal influenza vaccination in 2008-2009 and pandemic influenza A (H1N1) 2009 infection among school students from Kobe, Japan, April-June 2009.
abstract: We assessed the effect of seasonal trivalent inactivated influenza vaccination (TIV) on pandemic influenza 2009 (pH1N1)-related illness from April to June 2009 among 2849 students (aged 12-18 years). TIV was associated with an increase in the frequency of pH1N1-related illness among subjects (adjusted odds ratio, 1.47; 95% confidence interval, 1.14-1.89). TIV during the 2008-2009 season increased the risk of pH1N1-related illness from April to June 2009.
authors.affiliation: Field Epidemiology Training Program, National Institute of Infectious Diseases, Tokyo, Japan. yuuki.tsuchihashi@gmail.com
authors.forename: Yuuki
authors.initials: Y
authors.lastname: Tsuchihashi
authors.forename: Tomimasa
authors.initials: T
authors.lastname: Sunagawa
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Yahata
authors.forename: Hideaki
authors.initials: H
authors.lastname: Takahashi
authors.forename: Takao
authors.initials: T
authors.lastname: Toyokawa
authors.forename: Fumito
authors.initials: F
authors.lastname: Odaira
authors.forename: Takaaki
authors.initials: T
authors.lastname: Ohyama
authors.forename: Kiyosu
authors.initials: K
authors.lastname: Taniguchi
authors.forename: Nobuhiko
authors.initials: N
authors.lastname: Okabe
mesh_terms: D000293:Adolescent; D002648:Child; D005260:Female; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000276:immunology*; D007252:Influenza Vaccines / Q000276:immunology*; D007251:Influenza, Human / Q000453:epidemiology / Q000517:prevention & control* / Q000821:virology*; D007564:Japan / Q000453:epidemiology; D008297:Male; D016017:Odds Ratio; D058873:Pandemics; D012307:Risk Factors; D012621:Seasons; D013997:Time Factors
chemical_list: D007252:Influenza Vaccines