1.COVID-19 vaccine acceptance among kidney transplant recipients in Singapore.
Ian Tatt LIEW ; Hanis Abdul KADIR ; Sobhana THANGARAJU ; Quan Yao HO ; Eleanor NG ; Fiona FOO ; Terence KEE
Singapore medical journal 2025;66(2):73-80
INTRODUCTION:
A successful vaccination programme forms the cornerstone of controlling coronavirus disease 2019 (COVID-19). The unprecedented speed of COVID-19 vaccine development and lack of long-term data have raised fears regarding its safety and efficacy. Vaccine hesitancy can undermine the uptake, and hence success of the vaccination programme. Given the high complication rates of COVID-19 infections in kidney transplant recipients, it is particularly important to identify and address vaccine hesitancy in this population.
METHODS:
We conducted a cross-sectional survey among kidney transplant recipients attending transplant clinic between 5 April and 5 May 2021. The survey assessed attitudes towards COVID-19, willingness/hesitancy towards COVID-19 vaccination, vaccination concerns and prompts to vaccination. This was scored on a Likert scale with scores ranging from 'strongly disagree' - 1 point to 'strongly agree' - 5 points.
RESULTS:
One hundred and one completed responses were captured. Of these, 86% respondents reported to agree or strongly agree to vaccination. This was despite significant concerns of allograft rejection (mean score 4.12, standard deviation [SD] 0.97) and decreased immunosuppressant efficacy (mean score 4.14, SD 0.96) with vaccination. Multivariable model showed a positive association with transplant vintage of ≥ 5 years (median 2.41), lower educational levels of secondary school or less (median 5.82) and healthcare provider advocacy (median 1.88) in predicting vaccine acceptance.
CONCLUSIONS
Vaccine acceptance rate was high among kidney transplant recipients. Vaccine hesitancy remains a concern in those with a transplant vintage of less than 5 years and those with tertiary educational level. Healthcare provider advocacy is important in improving vaccine acceptance rates.
Humans
;
Kidney Transplantation
;
Singapore/epidemiology*
;
Male
;
Cross-Sectional Studies
;
Female
;
COVID-19 Vaccines
;
COVID-19/epidemiology*
;
Middle Aged
;
Adult
;
Transplant Recipients/psychology*
;
Patient Acceptance of Health Care/statistics & numerical data*
;
Vaccination Hesitancy/psychology*
;
Surveys and Questionnaires
;
Vaccination/psychology*
;
Aged
;
SARS-CoV-2
2.Knowledge of COVID-19 and associated factors among kidney transplant recipients and donors in Singapore.
Ian Tatt LIEW ; Yeli WANG ; Terence KEE ; Ping Sing TEE ; Rupesh Madhukar SHIRORE ; Sobhana THANGARAJU ; Quan Yao HO ; York Moi LU ; Jin Hua YONG ; Fiona FOO ; Eleanor NG ; Xia HE ; Constance LEE ; Shannon BAEY ; Marjorie FOO ; Tazeen Hasan JAFAR
Singapore medical journal 2025;66(2):81-90
BACKGROUND:
Effective interventions during the coronavirus disease 2019 (COVID-19) pandemic require an understanding of patients' knowledge and perceptions that influence their behaviour. Our study assessed knowledge of COVID-19 among kidney transplant recipients and donors, hitherto unevaluated.
METHODS:
We conducted a cross-sectional survey among 325 kidney transplant recipients and 172 donors between 1 May 2020 and 30 June 2020. The survey questionnaire assessed knowledge levels of COVID-19, sociodemographic data, health status, psychosocial impact of COVID-19 and precautionary behaviours during the pandemic.
RESULTS:
The mean COVID-19 knowledge score of the study population was 7.5 (standard deviation: 2.2) out of 10. The mean score was significantly higher among kidney recipients compared to kidney donors (7.9 [1.9] vs. 6.7 [2.6]; P <0.001). Younger age (21-49 vs. ≥50 years) and higher education (diploma and higher vs. secondary and lower) were associated with significantly higher knowledge scores in donors, but not among recipients ( P -interactions ≤0.01). In both kidney recipients and donors, financial concerns and/or social isolation were associated with lower knowledge levels.
CONCLUSIONS
Concerted efforts are needed to improve COVID-19 knowledge in kidney transplant recipients and donors, particularly older donors, donors with lower education and patients with financial concerns or feelings of social isolation. Intensive patient education may mitigate the impact of education levels on COVID-19 knowledge levels.
Humans
;
COVID-19/epidemiology*
;
Kidney Transplantation
;
Middle Aged
;
Singapore/epidemiology*
;
Male
;
Female
;
Adult
;
Cross-Sectional Studies
;
Health Knowledge, Attitudes, Practice
;
Transplant Recipients/psychology*
;
Surveys and Questionnaires
;
Tissue Donors/psychology*
;
SARS-CoV-2
;
Young Adult
;
Aged
;
Pandemics
3.Tool for tracking all-cause mortality and estimating excess mortality to support the COVID-19 pandemic response
Mengjuan Duan ; Mark S Handcock ; Bart Blackburn ; Fiona Kee ; Viema Biaukula ; Tamano Matsui ; Babatunde Olowokure
Western Pacific Surveillance and Response 2022;13(2):36-42
Problem:
Quantifying mortality from coronavirus disease (COVID-19) is difficult, especially in countries with limited resources. Comparing mortality data between countries is also challenging, owing to differences in methods for reporting mortality.
Context:
Tracking all-cause mortality (ACM) and comparing it with expected ACM from pre-pandemic data can provide an estimate of the overall burden of mortality related to the COVID-19 pandemic and support public health decision-making. This study validated an ACM calculator to estimate excess mortality during the COVID-19 pandemic.
Action:
The ACM calculator was developed as a tool for computing expected ACM and excess mortality at national and subnational levels. It was developed using R statistical software, was based on a previously described model that used non-parametric negative binomial regression and was piloted in several countries. Goodness-of-fit was validated by forecasting 2019 mortality from 2015–2018 data.
Outcome:
Three key lessons were identified from piloting the tool: using the calculator to compare reported provisional ACM with expected ACM can avoid potential false conclusions from comparing with historical averages alone; using disaggregated data at the subnational level can detect excess mortality by avoiding dilution of total numbers at the national level; and interpretation of results should consider system-related performance indicators.
Discussion
Timely tracking of ACM to estimate excess mortality is important for the response to COVID-19. The calculator can provide countries with a way to analyse and visualize ACM and excess mortality at national and subnational levels.


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