Cellular Immunity in COVID-19 Convalescents with PCR-Confirmed Infection but with Undetectable SARS-CoV-2–Specific IgG
Cellular Immunity in COVID-19 Convalescents with PCR-Confirmed Infection but with Undetectable SARS-CoV-2–Specific IgG
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DOI:
10.3201/eid2701.203772
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发表时间:
2021-01
影响因子:
11.8
通讯作者:
Lindemann M
中科院分区:
文献类型:
--
作者:
Schwarzkopf S;Krawczyk A;Knop D;Klump H;Heinold A;Heinemann FM;Thümmler L;Temme C;Breyer M;Witzke O;Dittmer U;Lenz V;Horn PA;Lindemann M
We investigated immune responses against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) among a group of convalescent, potential blood donors in Germany who had PCR-confirmed SARS-CoV-2 infection. Sixty days after onset of symptoms, 13/78 (17%) study participants had borderline or negative results to an ELISA detecting IgG against the S1 protein of SARS-CoV-2. We analyzed participants with PCR-confirmed infection who had strong antibody responses (ratio >3) as positive controls and participants without symptoms of SARS-CoV-2 infection and without household contact with infected patients as negative controls. Using interferon-γ ELISpot, we observed that 78% of PCR-positive volunteers with undetectable antibodies showed T cell immunity against SARS-CoV-2. We observed a similar frequency (80%) of T-cell immunity in convalescent donors with strong antibody responses but did not detect immunity in negative controls. We concluded that, in convalescent patients with undetectable SARS-CoV-2 IgG, immunity may be mediated through T cells.
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影响因子:
32.4
作者:
Ni, Ling;Ye, Fang;Dong, Chen
通讯作者:
Dong, Chen
DOI:
10.1001/jama.2020.7869
发表时间:
2020-06-09
期刊:
JAMA
影响因子:
--
作者:
Kirkcaldy RD;King BA;Brooks JT
通讯作者:
Brooks JT
影响因子:
56.9
作者:
Chandrashekar, Abishek;Liu, Jinyan;Barouch, Dan H.
通讯作者:
Barouch, Dan H.
影响因子:
3
作者:
Neuman, Benjamin W.;Kiss, Gabriella;Kunding, Andreas H.;Bhella, David;Baksh, M. Fazil;Connelly, Stephen;Droese, Ben;Klaus, Joseph P.;Makino, Shinji;Sawicki, Stanley G.;Siddell, Stuart G.;Stamou, Dimitrios G.;Wilson, Ian A.;Kuhn, Peter;Buchmeier, Michaell J.
通讯作者:
Buchmeier, Michaell J.
影响因子:
120.7
作者:
Shen, Chenguang;Wang, Zhaoqin;Liu, Lei
通讯作者:
Liu, Lei