1. Royal Veterinary College; Veterinary Epidemiology; Economics and Public Health Group; Hawkshead Lane Hatfield Hertfordshire AL9 7TA UK
2. European Food Safety Authority; Via Carlo Magno 1A 43126 Parma Italy
3. Friedrich-Loeffler Institut; Sudufer 10 17493 Greifswald-Insel Riems Germany
4. The Pirbright Institute; Ash Road Pirbright Surrey GU24 0NF UK