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.
First patient infected by tick-borne encephalitis virus For the first time, a person in the Netherlands has fallen ill after a bite from a tick carrying the tick-borne encephalitis virus (TBE virus).