[1] Childrens Hosp Westmead, Natl Ctr Immunisat Res & Surveillance, Westmead, NSW 2145, Australia
[2] Univ Sydney, Fac Med & Hlth, Sydney, NSW 2006, Australia
[3] Saudi Elect Univ, Dept Publ Hlth, Coll Hlth Sci, Jeddah 23442, Saudi Arabia
[4] Umm Al Qura Univ, Custodian Two Holy Mosques Inst Hajj & Umrah Res, Dept Environm & Hlth Res, Mecca 24381, Saudi Arabia
[5] Umm Al Qura Univ, Custodian Two Holy Mosques Inst Hajj & Umrah Res, Al Madinah Branch, Al Makkah 42372, Saudi Arabia
[6] Umm Al Qura Univ, Fac Appl Med Sci, Dept Lab Med, Mecca 24381, Saudi Arabia
[7] King Abdulaziz Univ, Fac Med Rabigh, Dept Family & Community Med, Jeddah 22252, Saudi Arabia
[8] Univ Sydney, Susan Wakil Sch Nursing & Midwifery, Fac Med & Hlth, Sydney, NSW 2006, Australia
[9] Univ Sydney, Marie Bashir Inst Infect Dis & Biosecur, Sydney, NSW 2006, Australia
[10] Westmead Hosp, New South Wales Biocontainment Ctr, Westmead, NSW 2151, Australia
[11] Westmead Hosp, Dept Infect Prevent & Control, Div Infect Dis & Sexual Hlth, Westmead, NSW 2151, Australia
[12] Western Sydney Local Hlth Dist, Westmead, NSW 2151, Australia
[13] Univ Sydney, Sch Biol Sci, Marie Bashir Inst Infect Dis & Biosecur, Sydney, NSW 2145, Australia
[14] Univ Sydney, Sydney Med Sch, Sydney, NSW 2145, Australia