Evidence map›Paper›PMID 34276671›Full record

ReviewFrontiers in immunology2021

Unraveling the Mystery Surrounding Post-Acute Sequelae of COVID-19.

Rakhee K Ramakrishnan, Tarek Kashour, Qutayba Hamid, Rabih Halwani, Imad M Tleyjeh

Open access · goldAbstract readReview
In one paragraph

Review in Frontiers in immunology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 142 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
142citing papers in PubMed, 5 pooled it
23.5field-weighted citation impact, top 1% 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

142 citing papers in PubMed, 5 syntheses or guidelines pooled it, 240 citations in OpenAlex.

  1. Pooled it
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  3. Systematic review with meta-analysis of active herpesvirus infections in patients with COVID-19: Old players on the new field.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2023
    Pooled it
  4. Pooled it
  5. Prevalence of post-acute COVID-19 syndrome symptoms at different follow-up periods: a systematic review and meta-analysis.Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases · 2022
    Pooled it
  6. Trial
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  16. Observational
  17. Prevalence of Persistent Cardiovascular and Pulmonary Abnormalities on PET/MRI and DECT Imaging in Long COVID Patients.Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2025
    Article
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  19. Article
  20. Article

82 more citing papers are in PubMed but not listed here.

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

5 authors at 4 institutions in 4 countries.

Rakhee K RamakrishnanCollege of Medicine, University of Sharjah, Sharjah, United Arab Emirates.
Tarek KashourDepartment of Cardiac Sciences, King Fahad Cardiac Center, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia.
Qutayba HamidCollege of Medicine, University of Sharjah, Sharjah, United Arab Emirates.
Rabih HalwaniCollege of Medicine, University of Sharjah, Sharjah, United Arab Emirates.
Imad M TleyjehInfectious Diseases Section, Department of Medical Specialties, King Fahad Medical City, Riyadh, Saudi Arabia.
University of Sharjah · AEAlfaisal University · SAKing Saud Medical City · SAMcGill University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

More than one year since its emergence, corona virus disease 2019 (COVID-19) is still looming large with a paucity of treatment options. To add to this burden, a sizeable subset of patients who have recovered from acute COVID-19 infection have reported lingering symptoms, leading to significant disability and impairment of their daily life activities. These patients are considered to suffer from what has been termed as "chronic" or "long" COVID-19 or a form of post-acute sequelae of COVID-19, and patients experiencing this syndrome have been termed COVID-19 long-haulers. Despite recovery from infection, the persistence of atypical chronic symptoms, including extreme fatigue, shortness of breath, joint pains, brain fogs, anxiety and depression, that could last for months implies an underlying disease pathology that persist beyond the acute presentation of the disease. As opposed to the direct effects of the virus itself, the immune response to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is believed to be largely responsible for the appearance of these lasting symptoms, possibly through facilitating an ongoing inflammatory process. In this review, we hypothesize potential immunological mechanisms underlying these persistent and prolonged effects, and describe the multi-organ long-term manifestations of COVID-19.

Indexed as

AnxietyArthralgiaAutoimmunityCOVID-19DepressionDyspneaFatigueGastrointestinal MicrobiomeHumansImmunocompromised HostIncidencePost-Acute COVID-19 SyndromePrevalenceRenin-Angiotensin SystemSARS-CoV-2chronic COVID-19clinical manifestationsimmunopathologylong COVID-19long-haulerspost-acute COVID-19 syndromepost-acute sequelae of COVID-19SARS-CoV-2

Identifiers

PMID34276671
PMCPMC8278217
OpenAlexW3176186491

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.