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REVIEW ARTICLE
Year : 2021  |  Volume : 1  |  Issue : 1  |  Page : 17-23

Efficacy and effectiveness of COVID-19 vaccines: Progress and prospect


School of Public Health; One Health Center of Excellence for Research and Training; Key Laboratory for Tropical Disease Control of Ministry of Education; NMPA Key Laboratory for Quality Monitoring and Evaluation of Vaccines and Biological Products, Sun Yat-Sen University, Guangzhou 510080, China

Correspondence Address:
Jiahai Lu
School of Public Health; One Health Center of Excellence for Research and Training; Key Laboratory for Tropical Disease Control of Ministry of Education; NMPA Key Laboratory for Quality Monitoring and Evaluation of Vaccines and Biological Products, Sun Yat-Sen University, Guangzhou 510080
China
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2773-0344.329027

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To prevent and control COVID-19, COVID-19 vaccines are being developed, tested, and approved at an unprecedented rate. As of September 24, 2021, 22 types of COVID-19 vaccines have been approved for conditional marketing or emergency use by at least one country worldwide. Vaccine efficacy/effectiveness is a crucial concern for vaccination. This article provides an overview of efficacy of phase III clinical trials, vaccination, effectiveness of real-world studies as well as challenges of COVID-19 vaccine.


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