Evidence map›Paper›PMID 34896265›Full record

ArticleInternational journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases2022

SARS-CoV-2 memory B and T cell profiles in mild COVID-19 convalescent patients.

Michael Gurevich, Rina Zilkha-Falb, Polina Sonis, David Magalashvili, Shay Menascu, Shlomo Flechter, Mark Dolev, Mathilda Mandel, Anat Achiron

Open access · goldAbstract read
In one paragraph

Article in International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 14% of its field
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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

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  11. COVID-19 Alpha Variant (B.1.1.7): Humoral, memory B and T cells in COVID-19 pediatric convalescents.Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology · 2022
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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

9 authors at 2 institutions in 1 country.

Michael GurevichSheba Medical Center, Multiple Sclerosis Center, Ramat-Gan, 52621, Israel; Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, 69978, Israel. Electronic address: Michael.Gurevich@sheba.health.gov.il.
Rina Zilkha-FalbSheba Medical Center, Multiple Sclerosis Center, Ramat-Gan, 52621, Israel. Electronic address: Rina.Falb@sheba.health.gov.il.
Polina SonisSheba Medical Center, Multiple Sclerosis Center, Ramat-Gan, 52621, Israel. Electronic address: Polina.Sonis@sheba.health.gov.il.
David MagalashviliSheba Medical Center, Multiple Sclerosis Center, Ramat-Gan, 52621, Israel. Electronic address: David.Magalashvili@sheba.gov.il.
Shay MenascuSheba Medical Center, Multiple Sclerosis Center, Ramat-Gan, 52621, Israel; Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, 69978, Israel. Electronic address: Shay.Menascu@sheba.health.gov.il.
Shlomo FlechterSheba Medical Center, Multiple Sclerosis Center, Ramat-Gan, 52621, Israel. Electronic address: Shlomo.Flechter@sheba.health.gov.il.
Mark DolevSheba Medical Center, Multiple Sclerosis Center, Ramat-Gan, 52621, Israel; Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, 69978, Israel. Electronic address: Mark.Dolev@sheba.health.gov.il.
Mathilda MandelSheba Medical Center, Multiple Sclerosis Center, Ramat-Gan, 52621, Israel; Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, 69978, Israel. Electronic address: Mathilda.Mandel@sheba.health.gov.il.
Anat AchironSheba Medical Center, Multiple Sclerosis Center, Ramat-Gan, 52621, Israel; Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, 69978, Israel. Electronic address: Anat.Achiron@sheba.health.gov.il.
Tel Aviv University · ILSheba Medical Center · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesAntiviral adaptive immunity involves memory B cells (MBC) and memory T cells (MTC). The dynamics of MBC and MTC in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) convalescents warrant further investigation.

methodsIn this cross-sectional and longitudinal study, blood-derived MBC and MTC responses were evaluated in 68 anti-spike IgG-positive mild coronavirus disease 2019 (COVID-19) convalescents at visit 1, between 1 and 7 months (median 4.1 months) after disease onset. SARS-CoV-2 anti-spike IgG was determined by ELISA, MBC by SARS-CoV-2-specific receptor binding domain (RBD) ELISpot, and interferon gamma (IFN-γ)-, interleukin 2 (IL2)-, and IFN-γ+IL2-secreting MTC by IFN-γ and IL2 SARS-CoV-2 FluoroSpot. For 24 patients sampled at the first visit, the IgG, MBC, and MTC analyses were also performed 3 months later at the second visit.

resultsSeventy-two percent of convalescents were both MBC- and MTC-positive, 18% were MBC-positive and MTC-negative, and 10% were MTC-positive and MBC-negative. The peak MBC response level was detected at 3 months after COVID-19 onset and persisted up to 7 months post infection. Significant MTC levels were detected 1 month after onset in response to S1, S2_N, and SNMO peptide pools. The frequency and magnitude of the MTC response to SNMO was higher than those to S1 and S2_N. Longitudinal analysis demonstrated that even when specific humoral immunity declined, the cellular immunity persisted.

conclusionsThe study findings demonstrate the durability of adaptive cellular immunity at least for 7 months after SARS-CoV-2 infection, suggesting long-lasting protection.

Indexed as

COVID-19Antibodies, ViralCross-Sectional StudiesEnzyme-Linked Immunospot AssayHumansLongitudinal StudiesMemory B CellsMemory T CellsSARS-CoV-2Antibodies, ViralConvalescentsIgGMemory B cellsMemory T cellsSARS-CoV-2

Identifiers

PMID34896265
PMCPMC8653411
OpenAlexW4200020049

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.