[1] King Saud Bin Abdulaziz Univ Hlth Sci, Dept Intens Care, Riyadh 11426, Saudi Arabia
[2] King Saud Bin Abdulaziz Univ Hlth Sci, Paediat Infect Dis, Coll Med, Riyadh 11426, Saudi Arabia
[3] King Saud Bin Abdulaziz Univ Hlth Sci, Infect Prevent & Control, Riyadh 11426, Saudi Arabia
[4] King Abdullah Int Med Res Ctr, Riyadh, Saudi Arabia
[5] Univ Toronto, Dept Med, Sunnybrook Hlth Sci Ctr, Toronto, ON, Canada
[6] Univ Toronto, Dept Crit Care Med, Sunnybrook Hlth Sci Ctr, Toronto, ON, Canada
[7] US Dept HHS, Influenza & Emerging Infect Dis Div, Biomed Adv Res & Dev Author, Washington, DC 20201 USA
[8] Inst Pasteur, Outbreak Invest Task Force, Ctr Global Hlth, Paris, France