Sullivan, SheenaKelly, Heath2015-12-131560-7917http://hdl.handle.net/1885/77807Twice each year the World Health Organization makes a recommendation for the composition of the influenza vaccine, based on circulating strains of influenza A(H3N2), A(H1N1) and B. Strain selection has always been based on immunogenicity studies with limiAuthor/s retain copyrightKeywords: influenza vaccine; 2009 H1N1 influenza; adult; aged; article; Australia; comorbidity; drug efficacy; female; Hong Kong influenza; human; immunogenicity; male; retrospective study; reverse transcription polymerase chain reaction; sensitivity analysis; worl20132016-02-24