Meningococcal disease serious, but still rare Meningococcal disease is a disease caused by a bacterium, the meningococcus. There are several types of this bacterium. In most cases, it does not make you ill.
Risk of measles outbreaks increases with decreasing vaccination coverage Vaccination coverage for vaccinations in the Dutch National Vaccination Program (NIP) decreased slightly by about half a percent for the third consecutive year.