Kissling, E.Valenciano, M.I-MOVE, Case-Control Studies Team2012-07-312012-07-312012-04-12Euro Surveill. 2012;17(15):pii=201461560-7917http://hdl.handle.net/10400.18/996Colaboração de: Baltazar Nunes, investigador do DEPTo provide an early estimate of 2011/12 influenza vaccine effectiveness (VE), we conducted a multicentre case–control study based on seven sentinel surveillance networks. We included influenza-like illness cases up to week 7/2012 from the vaccination target groups, swabbed less than eight days after symptom onset. Laboratory-confirmed influenza A(H3) cases were compared to negative controls. Adjusted VE was 43% (95% confidence interval: -0.4 to 67.7), suggesting low to moderate VE against influenza A(H3) in the early 2011/12 season.engInfluenzaVaccineEffectivenessDeterminantes da Saúde e da Doençajournal article