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8 clusters · 23 sources · 50 days · First seen about 2 months ago · Last updated 4 days ago

Climate change impact on infectious disease spread

Overview

Research and health organizations are warning that climate change and rising temperatures are expanding the geographic range and risk of various infectious diseases. In Africa, a study published in Nature projects that malaria transmission will shift into cooler regions of southern and eastern Africa. By 2050, cases could increase by as much as 20% in coastal southern Africa and about 5% in the East African highlands of Kenya and Ethiopia, as well as in Angola, Zambia, and eastern South Africa. Conversely, the hottest regions, such as Nigeria, Burkina Faso, and Mali, may see a decline in cases as parts of the Sahel potentially become too hot for mosquitoes to survive. The World Health Organization reported 579,000 malaria deaths in Africa in 2024, three-quarters of which were children under five. Researchers note that limiting global warming to 2°C could prevent approximately five additional malaria cases per 1,000 children in southern Africa. In Europe, the European Centre for Disease Prevention and Control (ECDC) has identified increased risks for foodborne illnesses, vibriosis, mosquito-borne diseases, and tick-borne illnesses due to heatwaves. In France, modeling suggests the tiger mosquito (Aedes albopictus) could inhabit nearly all of metropolitan France, excluding mountainous regions, by 2085. The mosquito has already expanded from a single department in 2004 to 81 departments by 2025, covering approximately 84% of the national territory. By 2026, health authorities confirmed an autochthonous case of chikungunya in Nogent-sur-Marne, near Paris. In September 2026, residents in the Val-d'Oise department reported an intense surge of tiger mosquitoes, describing the infestation as “unlivable.” By mid-September 2026, Santé publique France reported 13 local transmission cases of chikungunya and four cases of dengue in mainland France.

Entities

France · Abdus Salam International Centre for Theoretical Physics · Institut de recherche pour le développement · European Centre for Disease Prevention and Control · Cirad

Claims

What the coverage asserts, and how many sources carry each claim.

[● 3 SOURCES] Recent rains and mild temperatures have led to increased mosquito activity after summer heat and drought slowed them down. www.lalsace.fr · www.medisite.fr · www.vosgesmatin.fr
[● 2 SOURCES] Tiger mosquito development is optimal at temperatures between 20 and 35 °C. www.lalsace.fr · www.vosgesmatin.fr
[● 2 SOURCES] As of September 14, 2026, France recorded 13 cases of local chikungunya transmission and four cases of dengue. www.lalsace.fr · www.vosgesmatin.fr
[○ 1 SOURCE] Intense heatwaves cause high mortality rates in adult mosquitoes because they cannot regulate their internal temperature. www.medisite.fr
[○ 1 SOURCE] The tiger mosquito is permanently established in 30 out of 45 European countries. www.medisite.fr
[○ 1 SOURCE] The tiger mosquito has expanded to 81 departments in France as of 2025. www.medisite.fr

Timeline

4 days ago

[HEALTH] 2 sources
Tiger mosquito proliferation prompts local health measures in Île-de-France
Authorities in the Île-de-France region are intensifying efforts to combat the tiger mosquito, using passive traps and public awareness campaigns to prevent the spread of diseases like dengue.
5 days ago

[HEALTH] 7 sources
France sees mosquito resurgence due to mild September weather
Mild temperatures and recent rains are driving a resurgence in mosquito activity across France, following a summer suppressed by extreme heat and drought.
17 days ago

[HEALTH] 2 sources
Tiger mosquito surge reported in Val-d'Oise, France
An intense surge of tiger mosquitoes in France's Val-d'Oise department has left residents struggling with bites and health risks, though authorities can only trigger mass pest control during active viral risks.
30 days ago

[HEALTH] 2 sources
Tiger mosquito expansion reaches 81 French departments
The tiger mosquito has spread to 81 French departments, with the first local chikungunya case of 2026 confirmed in Nogent-sur-Marne near Paris.
about 1 month ago

[HEALTH] 2 sources
Tiger mosquito expansion increases dengue risk in France
The tiger mosquito is spreading across France, driven largely by climate change. Scientists warn of increasing risks for local dengue, chikungunya, and Zika transmission as the insect expands its territory.
about 1 month ago

[HEALTH] 2 sources
Tiger mosquito expansion threatens most of France by 2085
A scientific study warns that up to 96% of metropolitan France could be suitable for tiger mosquitoes by 2085, increasing the risk of dengue transmission due to climate change.
about 2 months ago

[HEALTH] 4 sources
Heatwaves and climate change increase infectious disease risks
Rising heatwaves and climate change are increasing the risk of infectious diseases, with studies predicting the tiger mosquito could inhabit most of France by 2085, raising dengue fever concerns.
about 2 months ago

[HEALTH] 3 sources
Climate Change Expands Malaria Risk Across Africa, Study Finds
A *Nature* study forecasts climate change will push malaria into cooler parts of southern and eastern Africa, raising cases up to 20% in some areas while reducing risk in the hottest regions; limiting warming 2

Sources

actu-environnement.com · actu.fr · bienpublic.com · estrepublicain.fr · femmeactuelle.fr · geographical.co.uk · huffingtonpost.fr · information.tv5monde.com · Lalsace.fr · ledauphine.com · lejsl.com · leprogres.fr · lindependant.fr · medisite.fr · memesita.com · modesettravaux.fr · ra-sante.com · tameteo.com · teukku.com · ville-decize.fr · villiers94.fr · vosgesmatin.fr · world-today-journal.com

This summary has been updated 5 times: see revision history