Email justin_wong@cda.gov.sg

Justin is a public health physician, currently serving as Director of Advanced Methods and Analytics at the Communicable Diseases Agency in Singapore. His work sits at the intersection of epidemiology, biostatistics, modelling and data analytics, with a focus on turning data into action-oriented decisions. He’s interested in building systems and capabilities – whether that’s strengthening surveillance, developing analytical methods, or growing teams that can bring together different disciplines to solve complex problems.

He has worked across Singapore, Brunei, the United Kingdom and with WHO in roles spanning disease control, surveillance, health security and strategic health planning. Prior to his current role in Singapore, Justin previously led the establishment of the Brunei Centre for Disease Control and Prevention. He also served as lead negotiator for the Government of Brunei Darussalam in the negotiations on the WHO Pandemic Agreement and on amendments to the International Health Regulations. Global health equity remains an important part of his work, particularly in thinking about how stronger public health systems and analytical capability can be built across different settings.

• Associate Professor, NUS Saw Swee Hock School of Public Health (Adjunct)
• Director, Advanced Methods and Analytics, Communicable Diseases Agency Singapore (Primary)
• Senior Consultant, National Centre for Infectious Diseases

• Infectious disease transmission dynamics
• Communicable diseases surveillance and response
• Outbreak preparedness

• BSc Immunology, Imperial College London. 2005
• MBBS, Imperial College London. 2007
• M. Phil. Public Health, University of Cambridge. 2010
• Fellowship of the Faculty of Public Health (UK). 2014

• Director, Advanced Methods and Analytics, Communicable Diseases Agency Singapore (2025 – current)
• Deputy Director (Surveillance), Intelligence, Surveillance and Technology, Communicable Diseases Agency Singapore (2024)
• Head & Consultant in Public Health, Brunei Centre for Disease Control and Prevention, Ministry of Health Brunei (2014 – 2024)
• Specialist Registrar in Public Health, Chief Knowledge Officer Directorate; Public Health England, UK (2013 – 2014)
• Specialist Registrar in Public Health, Eastern Region Public Health Observatory; Cambridge Institute of Public Health, UK (2012 – 2013)
• Specialist Registrar in Public Health, NHS Cambridgeshire Primary Care Trust, UK (2009 – 2012)
• Senior House Officer, Chelsea and Westminster Hospital, London, UK (2008 – 2009)
• House Officer, West Middlesex University Hospital, London, UK (2007 – 2008)

• ASEAN Field Epidemiology Training Network Technical Expert Advisory Group (2021 – 2024)
• WHO Western Pacific Regional Office COVID-19 Surveillance Working Group (2020)
• WHO Guidelines Development Group on Programmatic Management of Tuberculosis (2016 – 2017)
• WHO Task Force on Addressing Ethical Issues in TB Care and Control (2015 – 2016)

View more publications in Google Scholar.

• Chaw L, Koh KS, Rosledzana MA, Cook AR, Wong J. Factors associated with onward SARS-CoV-2 transmission among household and dormitory contacts of cases in Brunei Darussalam, August 2021 to February 2022: A retrospective cohort study. IJID Reg. 2026; 19: 100888. doi.org/10.1016/j.ijregi.2026.100888.
• Koh KS, Wong J, Chaw L. Epidemiology and control of hepatitis C virus infection in Brunei Darussalam: a retrospective cohort study. IJID Reg. 2025;18:100818. doi: 10.1016/j.ijregi.2025.100818.
• Rahman-Shepherd A, Razavi A, Adetifa I, Erondu N, Hinjoy S, Ho ZJM, Miranda I, Okereke E, Oyebanji O, Wong J, Fernando F. ASEAN’s response to mpox: Advancing regional and inter-regional cooperation to manage public health emergencies. PLOS Glob Public Health 2025 Jan 2;5(1):e0003985. doi: 10.1371/journal.pgph.0003985.
• Ebrahim SH, Zumla A, Wong J, Ur Rahman M, Al-Abri SS, Al Rabeeah AA, Memish ZA. Reducing the risk of highly pathogenic avian influenza A virus H5N1 transmission during the Hajj. Nat Med 2024 Aug;30(8):2107-2108. doi: 10.1038/d41591-024-00042-0,
• Chong CF, Abdullah MS, Chong PL, Asli R, Mani BI, Momin NR, Wong J, Rahman NA, Tan J, Chong VH. Impact of vaccination on COVID-19 severity during the second wave in Brunei Darussalam, 2021. Western Pac Surveill Response J 2024 Mar 25;15(1):1-11. doi: 10.5365/wpsar.2024.15.1.992.
• Sharif H, Ghani H, Ahmad L, Bagol S, Wong J, Tan CW, Zhu F, Wang LF, Naing L, Cunningham AC. Heterologous prime-boost with mRNA-1273 stimulates persistent neutralising antibodies in BBIBP-CorV-vaccinated individuals. Vaccine 2023 Nov 13;41(47):6910-6913. doi: 10.1016/j.vaccine.2023.10.044.
• Chaw L, Liew SQR, Wong J. Association between climate variables and pulmonary tuberculosis incidence in Brunei Darussalam. Sci Rep 2022 May 24;12(1):8775. doi: 10.1038/s41598-022-12796-z.
• Koh KS, Lim HS, Lim J, Wei Y, Minn PW, Wong J. Development and implementation of a national mobile health application: A case study from Brunei. J Glob Health 2022 Dec 21;12:03083. doi: 10.7189/jogh.12.03083.
• Ghani H, Ahmad L, Sharif H, Wong J, Bagol S, Alikhan MF, Taib S, Tan CW, Zhu F, Ong XM, Shim CY, Wang Y, Chan SY, Wei Y, Idris F, Naing L, Wang LF, Cunningham AC. Immunogenicity of COVID-19 vaccines and levels of SARS-CoV-2 neutralising antibody in the Bruneian population: Protocol for a national longitudinal study. BMJ Open 2022 Dec 1;12(12):e067020. doi: 10.1136/bmjopen-2022-067020.
• Shim CY, Chan SY, Wei Y, Ghani H, Ahmad L, Sharif H, Alikhan MF, Haji Bagol S, Taib S, Tan CW, Ong XM, Wang LF, Wang Y, Liu AQ, Lim HS, Wong J, Naing L, Cunningham AC. Technology-assisted adaptive recruitment strategy for a large nation-wide COVID-19 vaccine immunogenicity study in Brunei. Front Public Health 2022 Sep 12;10:983571. doi: 10.3389/fpubh.2022.983571.
• Malik MU, Abdullah MS, Chong PL, Asli R, Mani BI, Rahman N, Momin NR, Lim CA, Wong J, Chong CF, Chong VH. Clinical and demographic characteristics of COVID-19 cases in Brunei Darussalam: comparison between the first and second waves, 2020 and 2021. Western Pac Surveill Response J 2022 Aug 25;13(3):1-7. doi: 10.5365/wpsar.2022.13.3.925.
• Chong VH, Wong J, Abdullah MS, Asli R, Momin RN, Ahmed SN, Tamin N, Mani BI, Chong PL. COVID-19 patients with negative results on initial screening: Experience of Brunei Darussalam. Western Pac Surveill Response J 2022 Jan 6;13(1):1-4. doi: 10.5365/wpsar.2022.13.1.772.
• Omar N, Wong J, Thu K, Alikhan MF, Chaw L. Prevalence and associated factors of diabetes mellitus among tuberculosis patients in Brunei Darussalam: A 6-year retrospective cohort study. Int J Infect Dis 2021 Apr;105:267-273. doi: 10.1016/j.ijid.2021.02.064
• Thompson HA, Mousa A, Dighe A, Fu H, Arnedo-Pena A, Barrett P, Bellido-Blasco J, Bi Q, Caputi A, Chaw L, Soman B, Soriano V, Valent F, Vimercati L, Wee LE, Wong J, Ghani AC, Ferguson NM. Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) setting specific Transmission Rates: A Systematic Review and Meta-analysis. Clin Infect Dis 2021 Aug 2;73(3):e754-e764. doi: 10.1093/cid/ciab100.
• Li S, Lin Y, Zhu T, Fan M, Xu S, Qiu W, Chen C, Li L, Wang Y, Yan J, Wong J, Naing L, Xu S. Development and external evaluation of predictions models for mortality of COVID-19 patients using machine learning method. Neural Comput Appl 2021 Jan 5:1-10. doi: 10.1007/s00521-020-05592-1.
• Wong J, Chaw LL, Koh WC, Alikhan MF, Jamaludin SJ, WWP Poh, Naing L. Epidemiological Investigation of the First 135 COVID-19 Cases in Brunei: Implications for Surveillance, Control, and Travel Restrictions. Am J Trop Med Hyg 2020. doi: 10.4269/ajtmh.20-0771
• Wong J, Abdul Aziz ABZ, Chaw LL, Mahamud A, Griffith MM, YR Lo, Naing L. High proportion of asymptomatic and presymptomatic COVID-19 infections in travelers and returning residents to Brunei. J Trav Med 2020. doi: 10.1093/jtm/taaa066