Last updated on 22-8-2019 by Anonymous (not verified) Animal health Peer reviewed scientific article SCIENSANO Authorsvan Galen, G; Calozet, L; Leblond, A; Tritz, P; dal Pozzo, F; Porter, S R; Ann Brigitte Cay; Amory, H; Saegerman, C KeywordsAnimals Case-Control Studies Diagnosis, Differential Disease Outbreaks Europe Female Horse Diseases Horses Male Mass Screening Nervous System Diseases Sentinel Surveillance West Nile Fever Associated health topics: Animal health