1. Department of Metabolism, Digestion and Reproduction, Imperial College, London W2 1NY, UK
2. Present address: Directorate of Research, Shifa Tameer-e-Millat University, Islamabad, Pakistan
3. UK Health Security Agency, Porton Down, Salisbury, SP4 0JG, UK
4. University of Nicosia Medical School, Nicosia, Cyprus
5. RioTech Pharmaceuticals, 49 Arrivato Plaza, St Helens, WA10 1GH, UK
6. Sealy Institute for Vaccine Sciences, University of Texas Medical Branch, Galveston, TX 77555-1019, USA
7. Centre for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, TX 77555-1019, USA
8. Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555-1019, USA
9. Nuffield Department of Medicine, Old Road Campus, Oxford OX3 7BN, UK
10. Medical Science Division, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DU, UK