For the first time in five years, the number of children receiving vaccinations from the National Immunisation Programme has increased slightly.

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.

Nearly all infants in the Netherlands are still participating in the National Immunisation Programme.

Research by RIVM shows that the participants in the so-called tROM project, their supervisors and other people involved may have been exposed to chromium-6.

One in 5 tick bites occurs in an urban area. Although most tick bites occur in the countryside, many people are bitten in urban areas as well.