1. Public Health Department, Faculty of Veterinary Medicine, The University of Agricultural Sciences and Veterinary Medicine, Iaşi, Romania.
2. Department of Geography, Faculty of Geography and Geology, Alexandru Ioan Cuza University, Iaşi, Romania.
3. LNR/LR-UE West Nile UMR1161 Virologie INRA, ANSES, ENVA ANSES Laboratoire de Santé Animale, Maison Alfort, France.