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Kinetics of SARS-CoV-2 specific IgM and IgG responses in COVID-19 patients

Open access
Sun, Baoqing, Feng, Ying, Mo, Xiaoneng, Zheng, Peiyan, Wang, Qian, Li, Pingchao, Peng, Ping, Liu, Xiaoqing, Chen, Zhilong, Huang, Huimin, Zhang, Fan, Luo, Wenting, Niu, Xuefeng, Hu, Peiyu, Wang, Longyu, Peng, Hui, Huang, Zhifeng, Feng, Liqiang, Li, Feng, Zhang, Fuchun, Li, Fang, Zhong, Nanshan, Chen, Ling·2020·Emerging Microbes & Infections

Abstract

The emerging COVID-19 caused by SARS-CoV-2 infection poses severe challenges to global public health. Serum antibody testing is becoming one of the critical methods for the diagnosis of COVID-19 patients. We investigated IgM and IgG responses against SARS-CoV-2 nucleocapsid (N) and spike (S) protein after symptom onset in the intensive care unit (ICU) and non-ICU patients. 130 blood samples from 38 COVID-19 patients were collected. The levels of IgM and IgG specific to N and S protein were detected by ELISA. A series of blood samples were collected along the disease course from the same patient, including 11 ICU patients and 27 non-ICU patients for longitudinal analysis. N and S specific IgM and IgG (N-IgM, N-IgG, S-IgM, S-IgG) in non-ICU patients increased after symptom onset. N-IgM and S-IgM in some non-ICU patients reached a peak in the second week, while N-IgG and S-IgG continued to increase in the third week. The combined detection of N and S specific IgM and IgG could identify up to 75% of SARS-CoV-2 infected patients in the first week. S-IgG was significantly higher in non-ICU patients than in ICU patients in the third week. In contrast, N-IgG was significantly higher in ICU patients than in non-ICU patients. The increase of S-IgG positively correlated with the decrease of C-reactive protein (CRP) in non-ICU patients. N and S specific IgM and IgG increased gradually after symptom onset and can be used for detection of SARS-CoV-2 infection. Analysis of the dynamics of S-IgG may help to predict prognosis.

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Metadata

Authors
Sun, B., Feng, Y., Mo, X., Zheng, P., Wang, Q., Li, P., Peng, P., Liu, X., Chen, Z., Huang, H., Zhang, F., Luo, W., Niu, X., Hu, P., Wang, L., Peng, H., Huang, Z., Feng, L., Li, F., Zhang, F., Li, F., Zhong, N., & Chen, L.
Venue
Emerging Microbes & Infections
Published
2020-01
Volume
9
Issue
1
Pages
940-948
ISSN
2222-1751 (ISSN-L)
OpenAlex
W3023770076
Cited by
473
References
10
FWCI
12.77
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Kinetics of SARS-CoV-2 specific IgM and IgG responses in COVID-19 patients. https://app.cochat.ai/papers/10.1080/22221751.2020.1762515
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Sun, B., Feng, Y., Mo, X., Zheng, P., Wang, Q., Li, P., Peng, P., Liu, X., Chen, Z., Huang, H., Zhang, F., Luo, W., Niu, X., Hu, P., Wang, L., Peng, H., Huang, Z., Feng, L., Li, F., . . . Chen, L. (2020). Kinetics of SARS-CoV-2 specific IgM and IgG responses in COVID-19 patients. Emerging Microbes & Infections. https://doi.org/10.1080/22221751.2020.1762515

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