Arboviruses and leishmaniasis in Europe

The incidence of infectious diseases, which originally occurred mainly in subtropical and tropical regions, is changing due to conditions that favor the proliferation of microorganisms, with a trend towards a geographical expansion of cases. Factors that play an important role in this are climate change and increasing travel or migration movements. While a vaccination against dengue is also officially approved in Switzerland, this is not yet the case for Zika and chikungunya ¹.