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Toh TH, Qi YY, Yong SM, Lee JSY, Liyana NF, See RYH, Teh JH, Toh AZ, Naing L, Dahian K, Liew JW, Mose CN, Yong MZQ, Ling NJ, Chua DWS, Ling WW, Thirunavukkarasu N, Suhaili MR, Xia JL, Clemens J, Wang XY. Effectiveness of vero cell inactivated vaccine against severe acute respiratory infections (SARI) in Sibu, Malaysia: A retrospective test-negative design. Hum Vaccin Immunother 2023; 19:2167438. [PMID: 36705277 PMCID: PMC10012932 DOI: 10.1080/21645515.2023.2167438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
The effectiveness of the vero cell inactivated vaccine (CoronaVac®) against severe acute respiratory infection (SARI) caused by SARS-CoV-2 in the real world was assessed. A matched test-negative case-control design was employed using the web-based national information system, as well as the hospitalization dataset in Sibu Hospital. Vaccine effectiveness was measured by conditional logistic regression with adjustment for gender, underlying comorbidity, smoking status, and education level. Between 15 March and 30 September 2021, 838 eligible SARI patients were identified from the hospitalization records. Vaccine effectiveness was 42.4% (95% confidence interval [CI]: -28.3 to 74.1) for partial vaccination (after receiving the first dose to 14 days after receiving the second dose), and 76.5% (95% CI: 45.6 to 89.8) for complete vaccination (at 15 days or more after receiving the second dose). This analysis indicated that two doses of CoronaVac® vaccine provided efficacious protection against SARI caused by SARS-CoV-2 in the short term. However, the duration of protection, and performance against new variants need to be studied continuously.
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Affiliation(s)
- Teck-Hock Toh
- Clinical Research Centre, Sibu Hospital, Ministry of Health Malaysia, Sibu, Malaysia.,Faculty of Medicine, SEGi University, Kota Damansara, Malaysia
| | - Yang-Yang Qi
- Shanghai Institute of Infectious Disease and Biosecurity, Shanghai, China.,Key Laboratory of Medical Molecular Virology of MoE & MoH, and Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Sook-Min Yong
- Clinical Research Centre, Sibu Hospital, Ministry of Health Malaysia, Sibu, Malaysia
| | - Jeffrey Soon-Yit Lee
- Clinical Research Centre, Sibu Hospital, Ministry of Health Malaysia, Sibu, Malaysia
| | - Nur Fatin Liyana
- Clinical Research Centre, Sibu Hospital, Ministry of Health Malaysia, Sibu, Malaysia
| | | | - Jo-Hun Teh
- Divisional Health Office, Ministry of Health Malaysia, Sibu, Malaysia
| | - Aw-Zien Toh
- Clinical Research Centre, Sibu Hospital, Ministry of Health Malaysia, Sibu, Malaysia
| | - Lin Naing
- PAPRSB Institute of Health Sciences, University Brunei Darussalam, Bandar Seri Begawan, Brunei Darussalam
| | - Kamilah Dahian
- Clinical Research Centre, Sibu Hospital, Ministry of Health Malaysia, Sibu, Malaysia
| | - Jun-Wei Liew
- Medical Department, Sibu Hospital, Ministry of Health Malaysia, Sibu, Malaysia
| | - Caisha Nivenia Mose
- Emergency & Trauma Department, Sibu Hospital, Ministry of Health Malaysia, Sibu, Malaysia
| | - Malvina Zi-Qing Yong
- Clinical Research Centre, Sibu Hospital, Ministry of Health Malaysia, Sibu, Malaysia
| | - Ngiik-Jing Ling
- Clinical Research Centre, Sibu Hospital, Ministry of Health Malaysia, Sibu, Malaysia
| | - Diana Wang-Sing Chua
- Clinical Research Centre, Sibu Hospital, Ministry of Health Malaysia, Sibu, Malaysia
| | - Wee-Wei Ling
- Emergency & Trauma Department, Sibu Hospital, Ministry of Health Malaysia, Sibu, Malaysia
| | | | | | | | | | - Xuan-Yi Wang
- Shanghai Institute of Infectious Disease and Biosecurity, Shanghai, China.,Key Laboratory of Medical Molecular Virology of MoE & MoH, and Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China.,Children's Hospital, Fudan University, Shanghai, China
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