In 2018, 22.4 per cent of the Dutch adult population indicated they were occasional smokers.

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.

Since May 2015, there has been a Zika virus outbreak in South and Central America, including the Caribbean. The Zika virus can cause birth defects, including microcephaly (small head size).