Daijiworld Media Network - Geneva
Geneva, Dec 18: The World Health Organization (WHO) has warned of a sharp surge in influenza cases across Europe, driven by a newly dominant virus strain, placing healthcare systems in several countries under severe pressure.
The WHO said that 27 of the 38 countries in its European region are currently reporting high or very high influenza activity, with more than half of patients showing flu-like symptoms testing positive in countries including Ireland, Serbia, Slovenia and the United Kingdom. The flu season has begun around four weeks earlier than usual, raising concerns among health authorities.

According to the WHO, the infections are largely being driven by the A(H3N2) sub-clade K strain, which accounts for up to 90 per cent of confirmed flu cases in the region. However, the organisation said there is no evidence so far that the strain causes more severe illness compared to previous variants.
WHO Regional Director for Europe Hans Henri Kluge said the surge highlights how even small genetic changes in viruses can exert immense pressure on health systems. He also cautioned against misinformation, urging the public to rely on credible and evidence-based guidance from trusted health agencies.
The WHO stressed that vaccination remains the most effective preventive measure, especially for older adults, people with underlying health conditions, pregnant women, children and healthcare workers. Early data from the UK suggests that while the flu vaccine may not always prevent infection, it significantly reduces the risk of severe illness.
Health officials noted that school-age children are driving community transmission, while people aged 65 and above account for most severe cases requiring hospitalisation. The flu season is expected to peak in late December or early January.
The warning comes as health services across Europe report rising strain, with the UK’s NHS preparing for one of its toughest winters, Germany reporting an early start to the flu season, and countries such as France, Spain, Romania and Hungary witnessing sharp increases in cases and hospital admissions.