Flu Epidemic Declines in the Netherlands

The flu epidemic in the Netherlands appears to be waning, with a decrease in both the number of people consulting their general practitioners (GPs) for flu-like symptoms and the prevalence of the flu virus detected in laboratory samples. This marks a shift from the epidemic’s start in mid-February, which began a few weeks later than the previous year.

Recent Trends in Flu Cases

According to the National Institute for Public Health and the Environment (RIVM), the number of patients visiting GPs with acute respiratory complaints has fallen. Last week, 66 per 100,000 people sought medical attention for flu-like symptoms, a decrease from 71 the previous week and 68 the week before RIVM.

Laboratory testing confirms this trend. In the most recent week, the flu virus was identified in approximately 5% of samples taken from patients with flu-like complaints, a significant drop from the 30% observed the week prior RIVM. Similarly, the percentage of flu virus detected in nose and throat samples from participants in infection surveillance programs has likewise decreased.

Dominant Influenza Strain

This year’s epidemic has been primarily driven by influenza type A, differing from the previous year where influenza type B was the dominant strain. RIVM.

Flu Vaccine Effectiveness

Despite slight variations between the circulating flu strains and those included in this season’s flu vaccine, the RIVM reports that the vaccine has maintained a comparable level of effectiveness to previous years. RIVM.

Earlier Flu Activity in 2025

the flu epidemic began earlier in 2025, starting at the end of January and concluding at the end of March. This year’s epidemic was slightly shorter in duration. RIVM.

Ongoing Circulation and Vulnerable Groups

Even as the epidemic appears to be receding, the influenza virus continues to circulate. The RIVM emphasizes that certain groups remain particularly vulnerable to complications from the flu, including individuals over 60, those with respiratory conditions, and people with diabetes. RIVM.

Approximately 4,700 deaths annually in the Netherlands are attributed to the consequences of influenza. RIVM.