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Mosquito-Borne Diseases Surge in Europe: Climate Change and Travel Fuel Crisis

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Dengue fever surges in Europe as invasive mosquito species spread due to climate change and travel. Learn about the rising threat and preventive measures.

The Growing Threat of Mosquito-Borne Diseases in Europe

An alarming increase in mosquito-borne diseases, particularly dengue fever, is being observed across Europe, fueled by the spread of invasive mosquito species, according to the European Center for Disease Prevention and Control (ECDC). Notably, the Asian tiger mosquito (Aedes albopictus) has established itself in 13 European Union countries, including France, Spain, and Greece. Experts link its presence to the rising number of dengue fever cases across the continent.

Climate Change and International Travel

Climate change is creating conditions more favorable for the proliferation of these mosquitoes. The ECDC emphasizes that warmer temperatures and increased humidity serve as ideal breeding grounds for Aedes albopictus. This mosquito species has migrated northward, even reaching Paris, where the Olympic Games will be held later this year. Enhanced international travel further exacerbates the issue by increasing the risk of importing cases from regions where dengue and other mosquito-borne diseases are endemic.

The ECDC has reported that in 2023 alone, 130 autochthonous cases of dengue were recorded in the EU and surrounding areas, compared to 71 cases in 2022. The number of imported cases surged to almost 5,000 in 2023, marking an all-time high since European monitoring began in 2008.

Preventive Measures Against Mosquito Proliferation

Health experts advise taking proactive steps to mitigate mosquito breeding and protect against bites. Essential measures include removing stagnant water from gardens and balconies, using insect repellents and mosquito nets on windows and doors, and applying insecticides and home sprays. These preventative practices are crucial as the presence of Aedes albopictus continues to spread, potentially reaching northern, eastern, and western EU regions.

The Aedes aegypti mosquito, another species known for transmitting diseases such as yellow fever, dengue, chikungunya, and Zika, has recently established itself in Cyprus and several peripheral EU regions like Madeira and the French Caribbean islands. The ECDC stresses coordinated control measures, highlighting the urgent need for surveillance, early detection, and raising public awareness to combat these expanding threats.

Additional Threats: West Nile Virus and Aedes aegypti

Further compounding the public health challenge is the presence of West Nile virus, typically spread by the Culex pipiens mosquito, native to Europe. In 2023, 713 indigenous cases were recorded in nine EU countries, with 67 fatalities. Although this represents a decline from the previous year, the number of affected regions is at a historic peak since 2018. Critical to controlling these diseases are personal protective measures and community-level interventions, especially in areas most at risk.

  • The ECDC has been closely monitoring the spread of these invasive mosquito species and the corresponding rise in mosquito-borne diseases. In recent years, mass outbreaks were recorded in France, Italy, and Spain, catalyzed by the movement of people and goods, which facilitates the transfer of both mosquitoes and the diseases they carry.
  • These findings underscore the importance of climate action and reducing global travel where possible, not just for environmental benefits but also for public health. The increasing presence of Aedes albopictus and Aedes aegypti in Europe is a significant concern, not only due to their ability to transmit serious diseases but also their adaptability to new climates and regions.
  • Furthermore, public education campaigns are crucial in areas newly affected by these mosquito species. Awareness about preventive measures, recognizing symptoms early, and understanding the risks associated with international travel can help mitigate the spread of these diseases.
Daily Reports
Refs: | Le Parisien | Clarin |

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