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.
Influenza-like Illness Incidence Is Not Reduced by Influenza Vaccination Influenza vaccination reduces the number of influenza virus infections but not the overall number of illness.
The National Immunisation Programme in the Netherlands: Developments in 2013 Annually RIVM provides an overview of key events and developments in the National Immunisation Programme (NIP).