Alimuddin Zumla a, b, h
, David S Hui c, Jaffar A Al-Tawfiq d, e, Phillipe Gautret f, Brian McCloskey g, h, Ziad A Memish h, i
a Division of Infection and Immunity, Royal Free Hospital Campus, University College London, UK
b NIHR Biomedical Research Centre, University College London Hospital, London NW3 2PF, UK
c Division of Respiratory Medicine and Stanley Ho Center for Emerging Infectious Diseases, The Chinese University of Hong Kong, Prince of Wales Hospital, New Territories, Hong Kong
d John Hopkins Aramco healthcare, Dhahran, Saudi Arabia
e Indiana University School of Medicine, Indiana, USA
f Assistance Publique Hôpitaux de Marseille, CHU Nord, Pôle Infectieux, Institut Hospitalo-Universitaire Méditerranée Infection & Aix Marseille Université, Unité de Recherche en Maladies Infectieuses et Tropicales Emergentes (URMITE), Marseille, France
g Global Health and WHO Collaborating Centre on Mass Gatherings, Public Health England, London, UK
h Global Center for Mass Gatherings Medicine, Ministry of Health, Riyadh, Kingdom of Saudi Arabia
i Ministry of Health and Al-Faisal University, Riyadh, Saudi Arabia