Measurements by RIVM show that motorways again produced more noise in 2020 than the Directorate-General for Public Works and Water Management had calculated. The difference was 3 dB, the same as in 2019. Due to the coronavirus measures and the speed limit reduction, however, the noise levels along both motorways were lower in 2020 than in 2019. This is according to the 2021 Noise Monitor. The figures also show that, in 2020, so-called ‘quiet tyres’ still does not reduce noise produced by motorways in practice. The measurement and calculation of noise produced by railways did match.

In 2021, the incidence of enteric infections – which mainly cause gastrointestinal symptoms – was higher than in 2020, but still lower than before the coronavirus pandemic. This is the outcome of a study into enteric infections and pathogens transmitted from animals to humans.

The World Health Organization (WHO) has designated RIVM as WHO Collaborating Centre on Life Course and Health. The Collaborating Centre will support the WHO by contributing to knowledge and research on healthy ageing over the life course. People are growing older all over the world.

At the request of the Dutch House of Representatives, RIVM compiled a list of the 100 biggest ammonia emitters in the Netherlands. Recently, the underlying data used to compile this list were disclosed pursuant to a request under the Open Government Act.

The outbreak of the H5N1 variant of avian flu was the most remarkable outbreak in 2021. In October of that year, the Netherlands experienced the start of the biggest outbreak of avian flu since 2003.

The National Institute for Public Health and the Environment (RIVM) advises to reduce PFAS concentrations in the drinking water in parts of the Netherlands in the coming years. This concerns drinking water produced from river water.