Evidence map›Paper›PMID 34550000›Full record

ArticleMicrobiology spectrum2021

Kinetics of SARS-CoV-2 Specific and Neutralizing Antibodies over Seven Months after Symptom Onset in COVID-19 Patients.

Liguo Zhu, Xin Xu, Baoli Zhu, Xiling Guo, Ke Xu, Ci Song, Jianguang Fu, Huiyan Yu, Xiaoxiao Kong, Jiefu Peng and 8 more

Abstract read
In one paragraph

Article in Microbiology spectrum, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing 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

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

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  16. Long-Term Antibody Response to SARS-CoV-2 in Children.Journal of clinical immunology · 2023
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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

18 authors.

Liguo Zhu *Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China.ORCID 0000-0002-0636-4089
Xin Xu *Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China.
Baoli Zhu *Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China.
Xiling Guo *Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China.
Ke XuJiangsu Provincial Center for Disease Control and Prevention, Nanjing, China.
Ci SongDepartment of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China.
Jianguang FuJiangsu Provincial Center for Disease Control and Prevention, Nanjing, China.
Huiyan YuJiangsu Provincial Center for Disease Control and Prevention, Nanjing, China.
Xiaoxiao KongJiangsu Provincial Center for Disease Control and Prevention, Nanjing, China.
Jiefu PengJiangsu Provincial Center for Disease Control and Prevention, Nanjing, China.
Haodi HuangJiangsu Provincial Center for Disease Control and Prevention, Nanjing, China.
Xin ZouDepartment of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China.
Yuqing DingDepartment of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China.
Changjun BaoJiangsu Provincial Center for Disease Control and Prevention, Nanjing, China.
Fengcai ZhuJiangsu Provincial Center for Disease Control and Prevention, Nanjing, China.
Zhibin HuDepartment of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China.
Ming WuJiangsu Provincial Center for Disease Control and Prevention, Nanjing, China.
Hongbin ShenDepartment of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China.

Funding

China Postdoctoral Science Foundation (General Program, 2019M651900)Jiangsu Province Health Development Project with Science and Education QNRC2016546Jiangsu Science and Technology Committee | Project 333 of Jiangsu Province (333) BRA2018399MOST | National Major Science and Technology Projects of China (National Major Science and Technology Project of China) 2009ZX10004-904National Natural Science Foundation of China (NSFC) 81502861National Natural Science Foundation of China (NSFC) 81903382National Natural Science Foundation of China (NSFC) 82041026Natural Science Foundation of Jiangsu Province BK20190652Scientific research project of Jiangsu health commission H2018096Social Development Foundation of Jiangsu Province BE2021739
6 · The paper itself

Abstract

To assess the persistence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibodies produced by natural infection and describe the serological characteristics over 7 months after symptom onset among coronavirus disease 2019 (COVID-19) patients by age and severity group, we followed up COVID-19 convalescent patients confirmed from 1 January to 20 March 2020 in Jiangsu, China and collected serum samples for testing IgM/IgG and neutralizing antibodies against SARS-CoV-2 between 26 August and 28 October 2020. In total, 284 recovered participants with COVID-19 were enrolled in our study. Patients had a mean age of 46.72 years (standard deviation [SD], 17.09), and 138 (48.59%) were male. The median follow-up time after symptom onset was 225.5 (interquartile range [IQR], 219 to 232) days. During the follow-up period (162 to 282 days after symptom onset), the seropositive rate of IgM fluctuated around 25.70% (95% confidence interval [CI], 20.72% to 31.20%) and that of IgG fluctuated around 79.93% (95% CI, 74.79% to 84.43%). Of the 284 patients, 64 participants were tested when discharged from hospital. Compared with that at the acute phase, the IgM/IgG antibody levels and IgM seropositivity have decreased; however, the seropositivity of IgG was not significantly lower at this follow-up (78.13% versus 82.81%). Fifty percent inhibitory dilution (ID

Indexed as

AdolescentAdultAntibodies, NeutralizingAntibodies, ViralChildCOVID-19FemaleHumansImmunoglobulin GImmunoglobulin MImmunologic MemoryMaleMiddle AgedSARS-CoV-2Young AdultAntibodies, NeutralizingAntibodies, ViralImmunoglobulin GImmunoglobulin Mantibodiesimmune responsenatural infectionSARS-CoV-2virus dynamics

Identifiers

PMID34550000
PMCPMC8557935

What OpenQuestion holds

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Registered trials

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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.