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Frontiers of Medicine

ISSN 2095-0217

ISSN 2095-0225(Online)

CN 11-5983/R

邮发代号 80-967

2019 Impact Factor: 3.421

Frontiers of Medicine  2023, Vol. 17 Issue (4): 747-757   https://doi.org/10.1007/s11684-022-0954-x
  本期目录
Neutralization against SARS-CoV-2 Delta/Omicron variants and B cell response after inactivated vaccination among COVID-19 convalescents
Hao Wang1, Yu Yuan1, Bihao Wu2,3, Mingzhong Xiao4,5, Zhen Wang1, Tingyue Diao1, Rui Zeng1, Li Chen2,3, Yanshou Lei1, Pinpin Long1, Yi Guo1, Xuefeng Lai1, Yuying Wen1, Wenhui Li1, Hao Cai1, Lulu Song1, Wei Ni4,5, Youyun Zhao4,5, Kani Ouyang4,5, Jingzhi Wang4,5, Qi Wang1, Li Liu1, Chaolong Wang1, An Pan1, Xiaodong Li4,5(), Rui Gong2(), Tangchun Wu1()
1. Ministry of Education and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
2. CAS Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, China
3. University of Chinese Academy of Sciences, Beijing 100049, China
4. Affiliated Hospital of Hubei University of Chinese Medicine, Wuhan 430061, China
5. Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan 430061, China
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Abstract

Emerging SARS-CoV-2 variants have made COVID-19 convalescents susceptible to re-infection and have raised concern about the efficacy of inactivated vaccination in neutralization against emerging variants and antigen-specific B cell response. To this end, a study on a long-term cohort of 208 participants who have recovered from COVID-19 was conducted, and the participants were followed up at 3.3 (Visit 1), 9.2 (Visit 2), and 18.5 (Visit 3) months after SARS-CoV-2 infection. They were classified into three groups (no-vaccination (n = 54), one-dose (n = 62), and two-dose (n = 92) groups) on the basis of the administration of inactivated vaccination. The neutralizing antibody (NAb) titers against the wild-type virus continued to decrease in the no-vaccination group, but they rose significantly in the one-dose and two-dose groups, with the highest NAb titers being observed in the two-dose group at Visit 3. The NAb titers against the Delta variant for the no-vaccination, one-dose, and two-dose groups decreased by 3.3, 1.9, and 2.3 folds relative to the wild-type virus, respectively, and those against the Omicron variant decreased by 7.0, 4.0, and 3.8 folds, respectively. Similarly, the responses of SARS-CoV-2 RBD-specific B cells and memory B cells were boosted by the second vaccine dose. Results showed that the convalescents benefited from the administration of the inactivated vaccine (one or two doses), which enhanced neutralization against highly mutated SARS-CoV-2 variants and memory B cell responses. Two doses of inactivated vaccine among COVID-19 convalescents are therefore recommended for the prevention of the COVID-19 pandemic, and vaccination guidelines and policies need to be updated.

Key wordsCOVID-19 convalescent    SARS-CoV-2    inactivated vaccination    neutralizing antibody    B cell response
收稿日期: 2022-05-01      出版日期: 2023-10-12
Corresponding Author(s): Xiaodong Li,Rui Gong,Tangchun Wu   
 引用本文:   
. [J]. Frontiers of Medicine, 2023, 17(4): 747-757.
Hao Wang, Yu Yuan, Bihao Wu, Mingzhong Xiao, Zhen Wang, Tingyue Diao, Rui Zeng, Li Chen, Yanshou Lei, Pinpin Long, Yi Guo, Xuefeng Lai, Yuying Wen, Wenhui Li, Hao Cai, Lulu Song, Wei Ni, Youyun Zhao, Kani Ouyang, Jingzhi Wang, Qi Wang, Li Liu, Chaolong Wang, An Pan, Xiaodong Li, Rui Gong, Tangchun Wu. Neutralization against SARS-CoV-2 Delta/Omicron variants and B cell response after inactivated vaccination among COVID-19 convalescents. Front. Med., 2023, 17(4): 747-757.
 链接本文:  
https://academic.hep.com.cn/fmd/CN/10.1007/s11684-022-0954-x
https://academic.hep.com.cn/fmd/CN/Y2023/V17/I4/747
Fig.1  
Total(n = 208) No-vaccination group(n = 54) One-dose group(n = 62) Two-dose group(n = 92) P
Age (year) 58 (50–65) 58 (45–66) 57 (49–65) 59 (52–64) 0.705
Sex 0.341
Men 100 (48.1%) 30 (55.6%) 26 (41.9%) 44 (47.8%)
Women 108 (51.9%) 24 (44.4%) 36 (58.1%) 48 (52.2%)
Education 0.296
Middle school or lower 140 (67.3%) 33 (61.1%) 40 (64.5%) 67 (72.8%)
College or higher 68 (22.7%) 21 (38.9%) 22 (35.5%) 25 (27.2%)
Cigarette smoking 0.097
Never smoker 183 (88.0%) 47 (87.0%) 59 (95.2%) 77 (83.7%)
Ever smoker 25 (12.0%) 7 (13.0%) 3 (4.8%) 15 (16.3%)
Alcohol consumption 0.038
Never drinker 183 (88.0%) 45 (83.3%) 60 (96.8%) 78 (84.8%)
Ever drinker 25 (12.0%) 9 (16.7%) 2 (3.2%) 14 (15.2%)
Body mass index 24.3 (22.6– 26.5) 24.1 (22.7–26.0) 24.5 (22.1–26.8) 24.3 (22.8–26.5) 0.793
Waist circumference (cm) 90.0 (83.0–97.0) 92.0 (82.0–96.5) 88.0 (79.3–95.0) 91.0 (85.3–98.0) 0.163
Comorbidity
Hypertension 75 (36.1%) 19 (35.2%) 22 (35.5%) 34 (37.0%) 0.971
Diabetes 23 (11.1%) 5 (9.3%) 9 (14.5%) 9 (9.8%) 0.582
CVD 14 (6.7%) 4 (7.4%) 5 (8.1%) 5 (2.4%) 0.794
Severity 0.724
Mild 146 (70.2%) 36 (66.7%) 43 (69.4%) 67 (72.8%)
Severe 62 (29.8%) 18 (33.3%) 19 (30.6%) 25 (27.2%)
Time from infection to Visit 1 (month) 3.3 (1.3–4.4) 3.0 (1.0–4.0) 3.2 (1.4– 4.2) 3.5 (1.6–4.6) 0.143
Time from infection to Visit 2 (month) 9.2 (9.0–9.6) 9.2 (9.0–9.4) 9.3 (9.0–9.7) 9.2 (8.8–9.9) 0.440
Time from infection to Visit 3 (month) 18.5 (18.2–19.1) 18.4 (18.1–19.0) 18.4 (18.2–18.9) 18.7 (18.2–19.3) 0.148
Time from infection to the first vaccination (month) 16.7 (15.9– 17.3) 15.9 (15.1– 16.6) < 0.001
Time from infection to the second vaccination (month) 17.1 (16.4–17.5)
Time from infection to the last vaccination (month)a 16.7 (15.9–17.3) 17.1 (16.4–17.5) 0.043
Time from the last vaccination to Visit 3 (month) 1.7 (1.1–2.9) 1.6 (1.1–2.3) 0.263
Tab.1  
Fig.2  
Fig.3  
Fig.4  
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