[1] Alnoor Hosp, Minist Hlth, Dept Med, Infect Dis & Infect Control, Mecca, Saudi Arabia
[2] Univ Bonn, Med Ctr, Inst Virol, Bonn, Germany
[3] Univ Bonn, Med Ctr, German Ctr Infect Res, Bonn, Germany
[4] Minist Hlth, Jeddah Reg Lab, Dhahran, Saudi Arabia
[5] Minist Hlth, Blood Bank, Dhahran, Saudi Arabia
[6] Johns Hopkins Aramco Healthcare, Dhahran, Saudi Arabia
[7] Indiana Univ Sch Med, Indianapolis, IN 46202 USA
[8] Minist Hlth, Publ Hlth Directorate, Riyadh, Saudi Arabia
[9] Alfaisal Univ, Coll Med, Riyadh, Saudi Arabia