1. Wellcome Trust Sanger Institute, Hinxton CB10 1SA, UK.
2. Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB3 0ES, UK.
3. Animal Management in Rural and Remote Indigenous Communities (AMRRIC), Post Office Box 1464, Nightcliff, NT 0814, Australia.
4. Department of Clinical and Veterinary Surgery, São Paulo State University (UNESP), Via de Acesso Prof. Paulo Donato Castellane, s/n. CEP: 14884-900, Jaboticabal, São Paulo, Brazil.
5. Department of Veterinary Sciences, University of Messina, 98168 Messina, Italy.
6. Wohl Virion Centre and Medical Research Council Centre for Medical and Molecular Virology, Division of Infection and Immunity, University College London, Gower Street, London WC1E 6BT, UK.
7. Department of Life Sciences, Imperial College London, Silwood Park, Ascot, Berks. SL5 7PY, UK.