Surveillance studies of Aedes albopictus and flavivirus transmitting vectors such as Usutu or West Nile virus. Epidemiological studies are being conducted among hosts susceptible to these flaviviruses, especially among mosquitoes, birds, horses and humans. As for sandflies, studies of distribution and speciation and analysis of phlevovirus (Tuscany, Sicily, etc.) are carried out on insects and other hosts (animals and humans).