Rodrigues, Ana PaulaMachado, AusendaNunes, BaltazarPechirra, PedroGuiomar, Raquel2015-09-172015-09-172015-07-16http://hdl.handle.net/10400.18/3116When is it valuable to estimate vaccine effectiveness against a specific genetic group? - Clade of interest has a low proportion of cases but there is a suspicion of low VE (e.g.: newly circulating clade at the end of the season) - Several clades are circulating (VE against clade differs to the VE against influenza subtypetilineage) - Vaccine effectiveness is lowporDeterminantes da Saúde e da DoençaGripeVacina AntigripalEfectividadeInfecções Respiratóriasconference object