Rijksinstituut voor Volksgezondheid en Milieu Interim 2018/19 influenza vaccine effectiveness: six European studies, October 2018 to January 2019. | RIVM Jaar: 2019 Interim 2018/19 influenza vaccine effectiveness: six European studies, October 2018 to January 2019. | RIVM Bron: rivm.nl Download dossier (ZIP) · JSON