1. Institute of Integrative Biology, ETH Zurich, Zurich 8006, Switzerland.
2. Center for Disease Dynamics, Economics and Policy, Washington, DC 20005, USA.
3. Department of Veterinary Medicine, University of Cambridge, Cambridge CB3 0ES, UK.
4. Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544, USA.
5. Université Libre de Bruxelles, Brussels 1050, Belgium.
6. Fonds National de la Recherche Scientifique, Brussels 1050, Belgium.
7. International Livestock Research Institute, Nairobi 00100, Kenya.
8. Food and Agriculture Organization of the United Nations, Rome 00153, Italy.
9. Fogarty International Center, National Institutes of Health, Bethesda, MD 20892, USA.
10. Princeton Environmental Institute, Princeton University, Princeton, NJ 08544, USA.