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Situations
Tiger mosquito spread fuels dengue, chikungunya risk
18 clusters · 67 sources · last updated
Latest: Tiger mosquitoes expected to remain active through autumn
The expansion of the tiger mosquito (Aedes albopictus) continues to drive arbovirus risks across France and Switzerland. By mid-August 2026, the species had colonized 83 of the 96 mainland French departments. In Switzerl