Calvin J. Chiew
About
Calvin J. Chiew is a scholar working on Infectious Diseases, Health and Epidemiology.
According to data from OpenAlex, Calvin J. Chiew has authored 60 papers receiving a total of 3.3k indexed citations (citations by other indexed papers that have themselves been cited), including 38 papers in Infectious Diseases, 17 papers in Health and 16 papers in Epidemiology. Recurrent topics in Calvin J. Chiew's work include SARS-CoV-2 and COVID-19 Research (29 papers), COVID-19 Clinical Research Studies (17 papers) and Vaccine Coverage and Hesitancy (17 papers). Calvin J. Chiew is often cited by papers focused on SARS-CoV-2 and COVID-19 Research (29 papers), COVID-19 Clinical Research Studies (17 papers) and Vaccine Coverage and Hesitancy (17 papers). Calvin J. Chiew collaborates with scholars based in Singapore, United Kingdom and Japan. Calvin J. Chiew's co-authors include Vernon J. Lee, Annelies Wilder‐Smith, Matthias Paul HS Toh, Wycliffe Enli Wei, Zongbin Li, David Chien Lye, Wei Xin Khong, Rachael Pung, Kelvin Bryan Tan and Vernon Lee and has published in prestigious journals such as Annals of Internal Medicine, Clinical Infectious Diseases and Annals of Surgery.
In The Last Decade
Calvin J. Chiew
54 papers receiving 3.2k citations
Hit Papers
Peers
Calvin J. Chiew
Qulu Zheng United States
Forrest K. Jones United States
Kenji Mizumoto Japan
Fei Tian China
Mike Yat Wah Kwan Hong Kong
Jessica Y. Wong Hong Kong
Virginia B. Bowen United States
Michelle M. Hughes United States
Qifang Bi United States
Kyra H. Grantz United States
Citations per year, relative to Calvin J. Chiew Calvin J. Chiew (= 1×)
peers
Qulu Zheng
Countries citing papers authored by Calvin J. Chiew
Since
Specialization
Citations
This map shows the geographic impact of Calvin J. Chiew's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Calvin J. Chiew with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Calvin J. Chiew more than expected).
Fields of papers citing papers by Calvin J. Chiew
Since
Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences
This network shows the impact of papers produced by Calvin J. Chiew. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Calvin J. Chiew. The network helps show where Calvin J. Chiew may publish in the future.
Co-authorship network of co-authors of Calvin J. Chiew
This figure shows the co-authorship network connecting the top 25 collaborators of Calvin J. Chiew. A scholar is included among the top collaborators of Calvin J. Chiew based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Calvin J. Chiew. Calvin J. Chiew is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
1.
Wee, Liang En, Rth Ho, Jue Tao Lim, et al.. (2025). Real-world effectiveness of influenza vaccination and subsequent waning in a tropical setting: a retrospective cohort study. Clinical Microbiology and Infection. 32(4). 629–637.
2.
Wee, Liang En, Jue Tao Lim, Calvin J. Chiew, et al.. (2025). Long-term Sequelae Following Dengue Infection vs SARS-CoV-2 Infection in a Pediatric Population: A Retrospective Cohort Study. Open Forum Infectious Diseases. 12(4). ofaf134–ofaf134.
3.
Wee, Liang En, Rth Ho, Jue Tao Lim, et al.. (2025). Long-term sequelae post-hospitalization for respiratory syncytial virus vs. Omicron SARS-CoV-2 or influenza in adults and children: a retrospective cohort study. Clinical Microbiology and Infection. 31(9). 1560–1570.
4.
Wee, Liang En, Calvin J. Chiew, Zheng Jie Marc Ho, et al.. (2025). Utilization of population-wide digital contact tracing to estimate real-world vaccine effectiveness in a pandemic setting. Clinical Microbiology and Infection. 31(10). 1713–1719.
5.
Wee, Liang En, Jue Tao Lim, Calvin J. Chiew, et al.. (2024). Autoimmune Sequelae After Delta or Omicron Variant SARS-CoV-2 Infection in a Highly Vaccinated Cohort. JAMA Network Open. 7(8). e2430983–e2430983.
6.
Wee, Liang En, Xuan Jin, Benjamin Ong, et al.. (2024). Risks of SARS-CoV-2 JN.1 Infection and COVID-19–Associated Emergency Department Visits/Hospitalizations Following Updated Boosters and Prior Infection: A Population-Based Cohort Study. Clinical Infectious Diseases. 79(5). 1190–1196.
7.
Tang, Nicole K. Y., Jue Tao Lim, Borame Sue Lee Dickens, et al.. (2024). Effects of Recent Prior Dengue Infection on Risk and Severity of Subsequent SARS-CoV-2 Infection: A Retrospective Cohort Study. Open Forum Infectious Diseases. 11(8). ofae397–ofae397.
8.
Wee, Liang En, et al.. (2024). A Nationwide Cohort Study of Delta and Omicron SARS-CoV-2 Outcomes in Vaccinated Individuals With Chronic Lung Disease. CHEST Journal. 166(4). 685–696.
9.
Wee, Liang En, Jue Tao Lim, Calvin J. Chiew, et al.. (2024). Nirmatrelvir/ritonavir treatment and risk for postacute sequelae of COVID-19 in older Singaporeans. Clinical Microbiology and Infection. 31(1). 93–100.
10.
Wee, Liang En, Jue Tao Lim, Deanette Pang, et al.. (2024). Long-term cardiovascular, cerebrovascular, and thrombotic complications after SARS-CoV-2-Omicron infection: a retrospective cohort study. Clinical Microbiology and Infection. 30(10). 1319–1326.
11.
Wee, Liang En, Jue Tao Lim, Deanette Pang, et al.. (2023). Long-term neuropsychiatric sequelae of Delta versus Omicron SARS-CoV-2 infection. Clinical Microbiology and Infection. 30(4). 531–539.
12.
Chiew, Calvin J., et al.. (2023). Protective immunity of SARS-CoV-2 infection and vaccines against medically attended symptomatic omicron BA.4, BA.5, and XBB reinfections in Singapore: a national cohort study. The Lancet Infectious Diseases. 23(7). 799–805.
13.
Lim, Joline S.J., Ryan Tan, Ainsley Ryan Yan Bin Lee, et al.. (2023). COVID-19 Severity and Waning Immunity After up to 4 mRNA Vaccine Doses in 73 608 Patients With Cancer and 621 475 Matched Controls in Singapore. JAMA Oncology. 9(9). 1221–1221.
14.
Wee, Liang En, Calvin J. Chiew, Barnaby Edward Young, et al.. (2023). Real-world effectiveness of nirmatrelvir/ritonavir against COVID-19 hospitalizations and severe COVID-19 in community-dwelling elderly Singaporeans during Omicron BA.2, BA.4/5, and XBB transmission. Clinical Microbiology and Infection. 29(10). 1328–1333.
15.
Chiew, Calvin J., Deanette Pang, Vernon J. Lee, et al.. (2022). Vaccine effectiveness against Delta, Omicron BA.1, and BA.2 in a highly vaccinated Asian setting: a test-negative design study. Clinical Microbiology and Infection. 29(1). 101–106.
16.
Chiew, Calvin J., Chia Yin Chong, Wycliffe Enli Wei, et al.. (2022). Effectiveness of primary series and booster vaccination against SARS-CoV-2 infection and hospitalisation among adolescents aged 12–17 years in Singapore: a national cohort study. The Lancet Infectious Diseases. 23(2). 177–182.
17.
Chiew, Calvin J., et al.. (2022). Comparative effectiveness of 3 or 4 doses of mRNA and inactivated whole-virus vaccines against COVID-19 infection, hospitalization and severe outcomes among elderly in Singapore. The Lancet Regional Health - Western Pacific. 29. 100654–100654.
18.
Ong, Sean Wei Xiang, Calvin J. Chiew, Li Wei Ang, et al.. (2021). Clinical and Virological Features of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Variants of Concern: A Retrospective Cohort Study Comparing B.1.1.7 (Alpha), B.1.351 (Beta), and B.1.617.2 (Delta). Clinical Infectious Diseases. 75(1). e1128–e1136.
19.
Yeoh, Eng‐Kiong, Ka Chun Chong, Calvin J. Chiew, et al.. (2021). Assessing the impact of non-pharmaceutical interventions on the transmissibility and severity of COVID-19 during the first five months in the Western Pacific Region. One Health. 12. 100213–100213.
20.
Tan, Aidan Lyanzhiang, Calvin J. Chiew, Hairil Rizal Abdullah, et al.. (2019). Risk factors and reasons for cancellation within 24 h of scheduled elective surgery in an academic medical centre: A cohort study. International Journal of Surgery. 66. 72–78.
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.
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