Rijksinstituut voor Volksgezondheid en Milieu Seasonal flu vaccination in Dutch at-risk populations was not affected by A(H1N1) 2009 pandemic vaccination | RIVM Jaar: 2011 Seasonal flu vaccination in Dutch at-risk populations was not affected by A(H1N1) 2009 pandemic vaccination | RIVM Bron: rivm.nl Download dossier (ZIP) · JSON