Affiliation: | 1. Institute of Medical Sciences, University of Aberdeen, Aberdeen, AB25 2ZD, Scotland, UK;2. James A. Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA;3. Department of Infectious, Parasitic and Immunomediated Diseases, Istituto Superiore di Sanità, viale Regina Elena 299, 00161 Rome, Italy |