Flu Epidemic Appears Imminent as Cases Rise in the Netherlands
The Netherlands is experiencing a surge in respiratory infections, with a significant proportion of cases attributed to the influenza virus, signaling a potential epidemic on the horizon. Health officials are closely monitoring the situation as the number of individuals seeking medical attention for flu-like symptoms increases.
According to data released on February 4, 2026, the number of people visiting their doctors with flu-like symptoms rose to 51 per 100,000 inhabitants last week. This figure exceeds the threshold of 46 per 100,000, which indicates increased flu activity in general practice. The previous week, the rate was 40 per 100,000.
Experts from the National Institute for Public Health and the Environment (RIVM), Erasmus MC, and Nivel are observing a rise in the influenza virus. Analysis of samples collected through the Infectieradar program shows that 13% of samples from individuals experiencing respiratory symptoms contained the flu virus last week, up from 12% the week prior. Similarly, flu virus detection rates are increasing in samples taken by general practitioners participating in Nivel’s monitoring program, reaching 37% last week. Laboratory data too reflects this trend, with the percentage of samples testing positive for the flu virus increasing from 18% to 22% over the same period.
While influenza is a primary concern, other viruses are also contributing to respiratory illnesses, including seasonal coronaviruses, human metapneumovirus (hMPV), and Respiratory Syncytial Virus (RSV). However, the flu often presents with more severe symptoms, characterized by a rapid onset, chills, runny nose, headache, muscle pain, and high fever—potentially reaching 39°C (102.2°F) or higher—lasting typically three to five days.
The current increase in cases suggests that an official flu epidemic could be declared as early as next week if the threshold is surpassed again. Last year, the epidemic began in late January, peaking in early February with 118 visits to the doctor per 100,000 people – the highest number recorded since data collection began in 2020. The epidemic subsided by the complete of March.
This rise in influenza cases underscores the importance of preventative measures and awareness as the flu season progresses. The data provides valuable insight into the spread of respiratory viruses and informs public health strategies.
