Affiliations

• ¹ Centre for Evidence-based Health Care, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa. E-mail: charlesw@sun.ac.za shindon@who.int jvt@nottingham.ac.uk leibovic@post.tau.ac.il.
• ² Centre for Evidence-based Health Care, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa.
• ³ Pandemic and Epidemic Diseases Department, World Health Organization, Geneva, Switzerland shindon@who.int.
• ⁴ Pandemic and Epidemic Diseases Department, World Health Organization, Geneva, Switzerland.
• ⁵ Division of Epidemiology and Public Health, University of Nottingham, Nottingham, UK, Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, UK jvt@nottingham.ac.uk.
• ⁶ Division of Epidemiology and Public Health, University of Nottingham, Nottingham, UK, Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, UK.
• ⁷ Department of Medicine E, Beilinson Hospital, Petah-Tiqva, Israel, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel and Infectious Diseases Institute, Technion-Israel Institute of Technology, Haifa, Israel Department of Medicine E, Beilinson Hospital, Petah-Tiqva, Israel, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel and Infectious Diseases Institute, Technion-Israel Institute of Technology, Haifa, Israel leibovic@post.tau.ac.il.
• ⁸ Department of Medicine E, Beilinson Hospital, Petah-Tiqva, Israel, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel and Infectious Diseases Institute, Technion-Israel Institute of Technology, Haifa, Israel Department of Medicine E, Beilinson Hospital, Petah-Tiqva, Israel, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel and Infectious Diseases Institute, Technion-Israel Institute of Technology, Haifa, Israel.