Evidence map›Paper›PMID 34890790›Full record

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

Persistence of clinically relevant levels of SARS-CoV2 envelope gene subgenomic RNAs in non-immunocompromised individuals.

Merlin Davies, Laura R Bramwell, Nicola Jeffery, Ben Bunce, Ben P Lee, Bridget Knight, Cressida Auckland, Jane Ah Masoli, Lorna W Harries

Abstract 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 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
–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

10 citing papers in PubMed.

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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.

Merlin DaviesInstitute of Clinical and Biomedical Sciences, University of Exeter, RILD building, Royal Devon and Exeter Hospital (Wonford), Barrack Road, Exeter, UK.
Laura R BramwellInstitute of Clinical and Biomedical Sciences, University of Exeter, RILD building, Royal Devon and Exeter Hospital (Wonford), Barrack Road, Exeter, UK.
Nicola JefferyInstitute of Clinical and Biomedical Sciences, University of Exeter, RILD building, Royal Devon and Exeter Hospital (Wonford), Barrack Road, Exeter, UK.
Ben BunceNIHR Exeter Clinical Research Facility, Royal Devon and Exeter NHS Foundation Trust, Royal Devon and Exeter Hospital, Barrack Road, Exeter, UK.
Ben P LeeInstitute of Clinical and Biomedical Sciences, University of Exeter, RILD building, Royal Devon and Exeter Hospital (Wonford), Barrack Road, Exeter, UK.
Bridget KnightNIHR Exeter Clinical Research Facility, Royal Devon and Exeter NHS Foundation Trust, Royal Devon and Exeter Hospital, Barrack Road, Exeter, UK.
Cressida AucklandMicrobiology Department, Royal Devon and Exeter NHS Foundation Trust, Exeter, UK.
Jane Ah MasoliInstitute of Clinical and Biomedical Sciences, University of Exeter, RILD building, Royal Devon and Exeter Hospital (Wonford), Barrack Road, Exeter, UK; Healthcare for Older People, Royal Devon and Exeter NHS Foundation Trust, Exeter, UK.
Lorna W HarriesInstitute of Clinical and Biomedical Sciences, University of Exeter, RILD building, Royal Devon and Exeter Hospital (Wonford), Barrack Road, Exeter, UK. Electronic address: L.W.Harries@exeter.ac.uk.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThis study aimed to evaluate the associations between COVID-19 severity and active viral load, and to characterize the dynamics of active SARS-CoV-2 clearance in a series of archival samples taken from patients in the first wave of COVID-19 infection in the South West of the UK.

methodsSubgenomic RNA (sgRNA) and E-gene genomic sequences were measured in a retrospective collection of PCR-confirmed SARS-CoV-2-positive samples from 176 individuals, and related to disease severity. Viral clearance dynamics were then assessed in relation to symptom onset and last positive test.

resultsWhilst E-gene sgRNAs declined before E-gene genomic sequences, some individuals retained sgRNA positivity for up to 68 days. 13% of sgRNA-positive cases still exhibited clinically relevant levels of virus after 10 days, with no clinical features previously associated with prolonged viral clearance times.

conclusionsOur results suggest that potentially active virus can sometimes persist beyond a 10-day period, and could pose a potential risk of onward transmission. Where this would pose a serious public health threat, additional mitigation strategies may be necessary to reduce the risk of secondary cases in vulnerable settings.

Indexed as

COVID-19RNA, ViralHumansRetrospective StudiesSARS-CoV-2Viral LoadRNA, ViralpersistenceSARS-COV-2sgRNAtransmission

Identifiers

PMID34890790
PMCPMC8757659

What OpenQuestion holds

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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.