Rijksinstituut voor Volksgezondheid en Milieu The occurrence of serotypes 2a and 2b in isolates from cases with meningococcal disease in the Netherlands | RIVM Jaar: 1986 The occurrence of serotypes 2a and 2b in isolates from cases with meningococcal disease in the Netherlands | RIVM Bron: rivm.nl Download dossier (ZIP) · JSON