1 Department Pathobiology and Population Science, Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, UK.
2 SACIDS Foundation for One Health, Emerging and Vector-borne Diseases, Sokoine, University of Agriculture, Morogoro, Tanzania.
3 Division of Infection and Immunity, University College London, and UCL Hospitals NIHR Biomedical Research Centre London, London, UK. Electronic address: a.zumla@ucl.ac.uk.