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As temperatures rise, diseases such as West Nile fever and dengue fever are increasingly spreading north. What does that mean for Switzerland?
In southern France, 65 people fell ill with dengue fever last summer. Almost at the same time, 17 cases of West Nile fever were reported in East Germany, and in Italy there were even 723 cases. And in 2017, over 400 people contracted the Chikungunya virus in Italy. The special thing: those affected had not traveled to distant countries, but had been infected locally, via mosquitoes living there. In technical jargon one speaks of autochthonous transmission.
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