Dengue mosquitos race north across Europe as climate warms
Climate-driven threat grows
The Asian tiger mosquito (Aedes albopictus), once restricted to tropical and subtropical regions, is moving north across Europe at an alarming rate of 20km per year. With warmer temperatures and wetter summers, scientists are warning that major European cities including London (UK), Vienna (Austria) and Frankfurt (Germany) could soon face the threat of dengue fever outbreaks.
Countries at risk
Italy, Spain and France have already reported stable tiger mosquito populations.
Next in line are Germany, Austria and Switzerland, where the number of cases is increasing every year.
The UK and Scandinavia could soon face local transmission as summers continue to get warmer.
Dengue fever symptoms
Dengue fever is no longer just a tropical disease. Travelers and locals should look out for:
High fever
Severe headaches
Pain behind the eyes
Muscle and joint pain ("fracture fever")
Skin rash
Nausea and vomiting
In severe cases, dengue hemorrhagic fever can be life-threatening.
Cost of dengue outbreaks
According to the World Health Organization (WHO), the average cost of treating a dengue fever case in Europe can range from $500 to $2,000 per patient, depending on hospitalization. On a national scale, large-scale outbreaks can cost healthcare systems tens of millions of dollars annually.
Responses by companies and organizations
European Centre for Disease Prevention and Control (ECDC) – tracks the spread of mosquitoes.
World Health Organization (WHO) – issues global warnings.
Oxitec (a British biotechnology company) – tests genetically modified mosquitoes to control populations.
Bayer & BASF (Germany) – develops mosquito control products, including repellents and sprays.
Products and prevention
It is strongly recommended to use insect repellents containing DEET or picaridin.
Mosquito nets and window screens are becoming essential in southern Europe.
New biotechnological solutions are being developed to control mosquitoes, aiming to reduce populations without harming ecosystems.
Expert opinion
Dr Giovanni Marini, a climate health researcher in Italy, warns:
“The tiger mosquito is a climate migrant. Its rapid spread is a wake-up call that climate change is no longer a distant threat – it is already affecting health in Europe today.”
Similarly, Dr Sarah Jenkins of the London School of Hygiene & Tropical Medicine notes:
“If warming continues, we could see dengue transmission in the UK within the next decade.”
Concluding thoughts
Climate change is not only melting glaciers and raising sea levels, it is also changing the health risks we face. The northward spread of dengue-carrying mosquitoes across Europe highlights how interconnected the climate crisis and global health are.
🌍 Learn more about climate change and health at Natural World 50.

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