Evidence map›Paper›PMID 33741515›Full record

ArticleMicrobes and infection

Prolonged viral shedding and antibody persistence in patients with COVID-19.

Fatemeh Fotouhi, Mostafa Salehi-Vaziri, Behrokh Farahmand, Ehsan Mostafavi, Mohammad Hassan Pouriayevali, Tahmineh Jalali, Vahideh Mazaheri, Mona Sadat Larijani, Mahsa Tavakoli, Azita Eshratkhah Mohammadnejad and 6 more

Open access · greenAbstract read
In one paragraph

Article in Microbes and infection. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 11% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
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  5. Article
  6. Article
  7. The role of immune activation and antigen persistence in acute and long COVID.Journal of investigative medicine : the official publication of the American Federation for Clinical Research · 2023
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. SARS-CoV-2 Viral Shedding and Associated Factors among COVID-19 Inpatients and Outpatients.Interdisciplinary perspectives on infectious diseases · 2022
    Article
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  19. Review
  20. Article
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

16 authors at 1 institution in 1 country.

Fatemeh FotouhiDepartment of Influenza and Other Respiratory Viruses, Pasteur Institute of Iran, Tehran, Iran. Electronic address: fotouhi@pasteur.ac.ir.
Mostafa Salehi-VaziriDepartment of Arboviruses and Viral Hemorrhagic Fevers (National Reference Laboratory), Pasteur Institute of Iran, Tehran, Iran; COVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran. Electronic address: mostafavaziri1985@gmail.com.
Behrokh FarahmandDepartment of Influenza and Other Respiratory Viruses, Pasteur Institute of Iran, Tehran, Iran. Electronic address: b_farahmand@pasteur.ac.ir.
Ehsan MostafaviResearch Centre for Emerging and Reemerging Infectious Diseases, Pasteur Institute of Iran, Tehran, Iran. Electronic address: mostafaviehsan@gmail.com.
Mohammad Hassan PouriayevaliDepartment of Arboviruses and Viral Hemorrhagic Fevers (National Reference Laboratory), Pasteur Institute of Iran, Tehran, Iran; COVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran. Electronic address: M.H.POURIA@gmail.com.
Tahmineh JalaliDepartment of Arboviruses and Viral Hemorrhagic Fevers (National Reference Laboratory), Pasteur Institute of Iran, Tehran, Iran; COVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran. Electronic address: jalalitahmineh@gmail.com.
Vahideh MazaheriDepartment of Influenza and Other Respiratory Viruses, Pasteur Institute of Iran, Tehran, Iran. Electronic address: mazaherivahideh@gmail.com.
Mona Sadat LarijaniClinical Research Department, Pasteur Institute of Iran, Tehran, Iran. Electronic address: Mona.sadat@gmail.com.
Mahsa TavakoliDepartment of Arboviruses and Viral Hemorrhagic Fevers (National Reference Laboratory), Pasteur Institute of Iran, Tehran, Iran; COVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran. Electronic address: mahsa.tavakolirad@gmail.com.
Azita Eshratkhah MohammadnejadDepartment of Influenza and Other Respiratory Viruses, Pasteur Institute of Iran, Tehran, Iran. Electronic address: Azi4453@gmail.com.
Neda AfzaliCOVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran. Electronic address: nedaafzali55@yahoo.com.
Afsaneh ZokaeiCOVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran. Electronic address: Afsanehzokaei@gmail.com.
SeyedeAtefe HosseiniCOVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran. Electronic address: atefe1371.h@gmail.com.
Mohamad Mahdi MortazavipourCOVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran. Electronic address: mm_mortazavi94@yahoo.com.
FaridehNiknam OskoueiCOVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran. Electronic address: farideh_niknam14@yahoo.com.
Amitis RamezaniClinical Research Department, Pasteur Institute of Iran, Tehran, Iran. Electronic address: amitisramezani@hotmail.com.
Pasteur Institute of Iran · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

SARS-CoV-2 as a new global threat has affected global population for one year. Despite the great effort to eradicate this infection, there are still some challenges including different viral presentation, temporal immunity in infected individuals and variable data of viral shedding. We studied 255 COVID-19 suspected individuals to assess the viral shedding duration and also the antibody development against SARS-CoV-2 among the cases. Real Time RT-PCR assay was applied to determine the virus presence and SARS-CoV-2 antibodies were evaluated using SARS-CoV-2 IgM and IgG kits. 113 patients were confirmed for COVID-19 infection. The patients were followed until negative PCR achieved. The median viral shedding among studied population was obtained 34.16 (±17.65) days which was not significantly associated with age, sex and underlying diseases. Shiver and body pain were found in prolonged form of the infection and also patients who had gastrointestinal problems experienced longer viral shedding. Moreover, IgG was present in 84% of patients after 150 days. According to this data, the median viral shedding prolongation was 34.16 days which indicates that 14 days isolation might not be enough for population. In addition, IgG profiling indicated that it is persistent in a majority of patients for nearly 6 months which has brought some hopes in vaccine efficacy and application.

Indexed as

Virus SheddingAdultAntibodies, ViralCOVID-19FemaleHumansImmunoglobulin GImmunoglobulin MIranMaleMiddle AgedPolymerase Chain ReactionAntibodies, ViralImmunoglobulin GImmunoglobulin MAntibody persistenceCOVID-19Viral shedding

Identifiers

PMID33741515
PMCPMC7963517
OpenAlexW3138173565

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.