[Diseases transmitted by mosquitoes and urbanization. Examples of urban vectors of dengue and filariasis].

Once located in time and place the beginning of urbanization process, the mechanisms of adaptation to urban ecosystem and of dissemination by human conveyances are studied for two domestic mosquitoes: Aedes aegypti and Culex pipiens fatigans (= quinque-fasciatus). Then epidemiological consequences are discussed. Ae. aegypti pullulation constitutes a potential risk of urban yellow fever outbreak and the main factor of dengue haemorrhagic fever appearance; the increase of C. p. fatigans populations involves a slow rise of bancroftian filariasis. Future prospects for these diseases are discussed with regards to data concerning recent evolution of their own epidemiological features.