Pérez, Andrés, (1) Center for Animal Disease Modeling and Surveillance (CADMS), Dept. Medicine and Epidemiology, School of Veterinary Medicine, University of California Davis, One Shields Avenue, 1044 Haring Hall, Davis, CA 95616 (2) National Scientific and Technical Research Council (CONICET), Rivadavia 1917 (C1033AAJ), Autonomous City of Buenos Aires, Argentine Republic, United States