Rijksinstituut voor Volksgezondheid en Milieu Increase in invasive disease caused by Haemophilus influenzae b, the Netherlands, 2020 to 2021 | RIVM Jaar: 2021 Increase in invasive disease caused by Haemophilus influenzae b, the Netherlands, 2020 to 2021 | RIVM Bron: rivm.nl Download dossier (ZIP) · JSON