Last winter’s flu epidemic was short and mild. And then COVID-19 arrived. The flu epidemic in the winter of 2019/2020 was mild and lasted only 5 weeks.
Improvement of air quality continues In 2019, the calculated concentrations of nitrogen dioxide (NO2) and particulate matter (PM10) were below the European limit values in almost the whole of the Netherlands. Locally, the limit value for nitrogen dioxide is still being exceeded.