PMID- 36679878 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230308 IS - 2076-393X (Print) IS - 2076-393X (Electronic) IS - 2076-393X (Linking) VI - 11 IP - 1 DP - 2022 Dec 23 TI - Efficacy and Safety of COVID-19 Vaccination in Older Adults: A Systematic Review and Meta-Analysis. LID - 10.3390/vaccines11010033 [doi] LID - 33 AB - Objective: To analyze the differences in efficacy and safety of different types of novel coronavirus pneumonia (COVID-19) vaccines in different age groups (young adults and elderly). Methods: Randomized controlled trials (RCTs) on COVID-19 vaccine in PubMed, Embase, Web of Science, and Cochrane library were searched by computer, and eight eligible studies were analyzed. Meta-analysis was performed using Stata 16.0 and RevMan5.4 software. Results: The mean geometric titer (GMT) of the virus in the elderly was significantly higher than that in the placebo group (SMD = 0.91, 95% CI (0.68, 1.15), p < 0.01), presenting no obvious difference compared with the young adults (SMD = 0.19, 95% CI (0.38, 0.01), p = 0.06). Meanwhile, the effect of multiple vaccinations was better than that of single vaccination (SMD = 0.83, 95% CI (0.33, 1.34), p < 0.01). However, the number of adverse events (AEs) in the elderly was lower than that in the young adults (OR = 0.35, 95% CI (0.29, 0.42), p < 0.01). Conclusions: The immunization effect of COVID-19 vaccine in the elderly is obvious, especially after multiple vaccinations, and the incidence of AEs in the elderly is low, which proves that the vaccination of the elderly is safe and effective. FAU - Zhang, Lei AU - Zhang L AD - Department of General Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China. FAU - Jiang, Lihong AU - Jiang L AD - Department of General Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China. FAU - Tian, Tian AU - Tian T AD - Department of Epidemiology, School of Public Health, Harbin Medical University, Harbin 150086, China. FAU - Li, Wenjing AU - Li W AD - Department of General Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China. FAU - Pan, Yonghui AU - Pan Y AD - Fourth Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China. FAU - Wang, Yongchen AU - Wang Y AD - Department of General Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China. LA - eng PT - Journal Article PT - Review DEP - 20221223 PL - Switzerland TA - Vaccines (Basel) JT - Vaccines JID - 101629355 PMC - PMC9862835 OTO - NOTNLM OT - COVID-19 OT - effectiveness OT - elderly OT - security OT - vaccines COIS- The authors declare no conflict of interest. EDAT- 2023/01/22 06:00 MHDA- 2023/01/22 06:01 PMCR- 2022/12/23 CRDT- 2023/01/21 01:56 PHST- 2022/11/16 00:00 [received] PHST- 2022/12/06 00:00 [revised] PHST- 2022/12/21 00:00 [accepted] PHST- 2023/01/21 01:56 [entrez] PHST- 2023/01/22 06:00 [pubmed] PHST- 2023/01/22 06:01 [medline] PHST- 2022/12/23 00:00 [pmc-release] AID - vaccines11010033 [pii] AID - vaccines-11-00033 [pii] AID - 10.3390/vaccines11010033 [doi] PST - epublish SO - Vaccines (Basel). 2022 Dec 23;11(1):33. doi: 10.3390/vaccines11010033.