Mosquito-borne diseases in Europe: Containment strategy depends on when the alarm sets off

New research based on the Italian experience with outbreaks of Chikungunya, a disease borne by the tiger mosquito, in 2007 and 2017, shows that different vector control strategies are needed, depending on the time when the first cases are notified, thus providing useful indications supporting urgent decision-making of public health authorities in response to emerging mosquito-borne epidemics.

"In particular," says Alessia Melegaro of Bocconi's Dondena Center, co-author of the study, "results suggest that, if Chikungunya cases are notified in late spring or during summer, the combination of larvicides, adulticides and breeding sites removal represents the optimal response strategy. On the other hand, larvicides are proven to be more cost effective in early summer and in the warmer seasons, while adulticides should be preferred in the fall and colder seasons."

The study was conducted as a part of the LEXEM (Laboratory of Excellence for Epidemiology and Modelling) project, funded by the Autonomous Province of Trento and coordinated by Fondazione Edmund Mach. The project combined the different expertise in the area coming from Dondena Centre at Bocconi University of Milan, Fondazione Bruno Kessler of Trento, Fondazione Edmund Mach of S. Michele all'Adige, Istituto zooprofilattico sperimentale delle Venezie and the University of Trento.