Impact of Climate Change on the Spread of Dengue Fever in Western Europe

Recent research highlights the potential threat posed by climate change in expanding the habitat of the Asian tiger mosquito, a primary vector for dengue fever, into Western Europe. Although dengue fever has traditionally been confined to tropical and subtropical regions, rising temperatures and changing climate patterns are making northern areas increasingly hospitable for the mosquito. The Asian tiger mosquito, which lays its eggs in water, thrives in warm conditions, with development from larvae to adults accelerated by higher temperatures.

Historically first arriving in Southeast Europe in 1979, the mosquito has since spread throughout Southwest Europe and is now progressing northward into countries like France. Using climate modeling and recent spread data, scientists predict that major Western European cities—including London, Vienna, Strasbourg, and Frankfurt—may soon become suitable environments for this mosquito. The rate of northward expansion has notably increased from approximately 6 km per year in 2006 to about 20 km per year in 2024.

Expert analysis suggests that the mosquito could establish itself in northern France within a decade, providing a pathway for further spread to the UK, where the climate is already favorable. This expansion poses considerable health concerns since the Asian tiger mosquito is not only a vector for dengue fever but also transmits Zika and chikungunya viruses. The findings underscore the importance of monitoring climate trends and vector distribution as part of public health strategies to prevent outbreaks in new regions.

Source: [https://medicalxpress.com/news/2025-08-climate-dengue-fever-western-europe.html]