Evidence map›Paper›PMID 36146822›Full record

ArticleViruses2022

Effectiveness of Booster Doses of the SARS-CoV-2 Inactivated Vaccine KCONVAC against the Mutant Strains.

Chanchan Xiao, Jun Su, Chanjuan Zhang, Boya Huang, Lipeng Mao, Zhiyao Ren, Weibin Bai, Huayu Li, Guomin Lei, Jingshan Zheng and 3 more

Abstract read
In one paragraph

Article in Viruses, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  7. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors.

Chanchan XiaoDepartment of Microbiology and Immunology, Institute of Geriatric Immunology, School of Medicine, Jinan University, Guangzhou 510630, China.
Jun SuAffiliated Huaqiao Hospital, Jinan University, Guangzhou 510630, China.
Chanjuan ZhangDepartment of Microbiology and Immunology, Institute of Geriatric Immunology, School of Medicine, Jinan University, Guangzhou 510630, China.
Boya HuangDepartment of Systems Biomedical Sciences, School of Medicine, Jinan University, Guangzhou 510630, China.
Lipeng MaoDepartment of Systems Biomedical Sciences, School of Medicine, Jinan University, Guangzhou 510630, China.
Zhiyao RenDepartment of Systems Biomedical Sciences, School of Medicine, Jinan University, Guangzhou 510630, China.
Weibin BaiDepartment of Food Science and Engineering, Institute of Food Safety and Nutrition, Guangdong Engineering Technology Center of Food Safety Molecular Rapid Detection, Jinan University, Guangzhou 510630, China.
Huayu LiShenzhen Kangtai Biological Products Co., Ltd., Shenzhen 518000, China.
Guomin LeiShenzhen Kangtai Biological Products Co., Ltd., Shenzhen 518000, China.
Jingshan ZhengShenzhen Kangtai Biological Products Co., Ltd., Shenzhen 518000, China.
Guobing ChenDepartment of Microbiology and Immunology, Institute of Geriatric Immunology, School of Medicine, Jinan University, Guangzhou 510630, China.
Xiaofeng LiangDepartment of Microbiology and Immunology, Institute of Geriatric Immunology, School of Medicine, Jinan University, Guangzhou 510630, China.
Congling QiuDepartment of Microbiology and Immunology, Institute of Geriatric Immunology, School of Medicine, Jinan University, Guangzhou 510630, China.ORCID 0000-0003-1796-6111

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

As the COVID-19 epidemic progresses with the emergence of different SARS-CoV-2 variants, it is important to know the effectiveness of inactivated SARS-CoV-2 vaccines against the variants. To maximize efficiency, a third boost injection of the high-dose SARS-CoV-2 inactivated vaccine KCONVAC was selected for investigation. In addition to the ancestral strain, KCONVAC boost vaccination induced neutralizing antibodies and antigen-specific CD8 T cells to recognize several variants, including B.1.617.2 (Delta), B.1.1.529 (Omicron), B.1.1.7 (Alpha), B.1.351 (Beta), P.3, B.1.526.1 (Lota), B.1.526.2, B.1.618, and B.1.617.3. Both humoral and cellular immunity against variants were lower than those of ancestral variants but continued to increase from day 0 to day 7 to day 50 after boost vaccination. Fifty days post-boost, the KCONVAC-vaccinated CD8 T-cell level reached 1.23-, 2.59-, 2.53-, and 1.01-fold that of convalescents against ancestral, Delta, Omicron and other SARS-CoV-2 variants, respectively. Our data demonstrate the importance of KCONVAC boosters to broaden both humoral and cellular immune responses against SARS-CoV-2 variants.

Indexed as

COVID-19Viral VaccinesAntibodies, NeutralizingAntibodies, ViralCOVID-19 VaccinesHumansSARS-CoV-2Vaccines, InactivatedAntibodies, NeutralizingAntibodies, ViralCOVID-19 VaccinesSARS-CoV-2 inactivated vaccinesVaccines, InactivatedViral Vaccinescellular immune responsesinactivated vaccine KCONVACSARS-CoV-2variants

Identifiers

PMID36146822
PMCPMC9503905

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.