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Epidemiological, antigenic and genetic characteristics of seasonal influenza A(H1N1), A(H3N2) and B influenza viruses: Basis for the WHO recommendation on the composition of influenza vaccines for use in the 2009–2010 Northern Hemisphere season

VaccinationSeasonal Influenza AVaccine DevelopmentEmerging Infectious DiseasesMedicineVirologyStrain SelectionVaccine EfficacyInfluenza VaccineFlu VaccinationPrecision VaccinologyWho RecommendationEpidemiologyGenetic CharacteristicsEgg-based Vaccine ProductionInfluenza Vaccines