Rijksinstituut voor Volksgezondheid en Milieu Circulation of pertussis and poor protection against diphtheria among middle-aged adults in 18 European countries. | RIVM Jaar: 2021 Circulation of pertussis and poor protection against diphtheria among middle-aged adults in 18 European countries. | RIVM Bron: rivm.nl Download dossier (ZIP) · JSON