Spread of tick-borne encephalitis virus in the Netherlands Every year about 1.5 million ticks bite someone in the Netherlands, especially between March and October. Most people will not get sick of that.
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.