Evidence map›Paper›PMID 32638022›Full record

ArticleClinical infectious diseases : an official publication of the Infectious Diseases Society of America2021

Direct Evidence of Active SARS-CoV-2 Replication in the Intestine.

Qun Qian, Lifang Fan, Weicheng Liu, Jin Li, Junqiu Yue, Mingwei Wang, Xianliang Ke, Yan Yin, Quanjiao Chen, Congqing Jiang

Abstract read
In one paragraph

Article in Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 106 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
106citing papers in PubMed, 1 pooled it
–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

106 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Review
  4. Review
  5. A survey of SARS-CoV-2 tropism.Infectious diseases & immunity · 2025
    Review
  6. Article
  7. Review
  8. Article
  9. Relationship Between Acute SARS-CoV-2 Viral Clearance and Long COVID-19 (Long COVID) Symptoms: A Cohort Study.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2025
    Article
  10. Human microbiome in post-acute COVID-19 syndrome (PACS).Current research in microbial sciences · 2025
    Article
  11. Article
  12. Article
  13. Review
  14. Review
  15. Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. SARS-CoV-2 and the DNA damage response.The Journal of general virology · 2023
    Review

46 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

10 authors.

Qun QianDepartment of Colorectal and Anal Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China.
Lifang FanDepartment of Pathology, Hubei Cancer Hospital, Wuhan, China.
Weicheng LiuDepartment of Colorectal and Anal Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China.
Jin LiDepartment of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China.
Junqiu YueDepartment of Pathology, Hubei Cancer Hospital, Wuhan, China.
Mingwei WangDepartment of Pathology, Hubei Cancer Hospital, Wuhan, China.
Xianliang KeCAS Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Center for Biosafety Mega-Science, CAS Center for Influenza Research and Early Warning, Chinese Academy of Sciences, Wuhan, China.
Yan YinDepartment of Colorectal and Anal Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China.
Quanjiao ChenCAS Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Center for Biosafety Mega-Science, CAS Center for Influenza Research and Early Warning, Chinese Academy of Sciences, Wuhan, China.
Congqing JiangDepartment of Colorectal and Anal Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCurrently, there is no direct evidence to prove the active replication of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in the intestinal tract and relevant pathological changes in the colon and rectum. We investigated the presence of virions and pathological changes in surgical rectal tissues of a patient with clinically confirmed coronavirus disease 2019 (COVID-19) with rectal adenocarcinoma.

methodsThe clinical data were collected during hospitalization and follow-up of this patient. Quantitative reverse transcriptase-polymerasechain reaction (RT-PCR) was performed on the rectal tissue specimens obtained from surgical resection, succus entericus and intestinal mucosa of ileostomy, and rectal mucosa during follow-up after recovery. Ultrathin sections of surgical samples were observed for SARS-CoV-2 virions using electron microscopy. Histopathological examination was performed using hematoxylin-eosin stain. Immunohistochemical analysis and immunofluorescence were carried out on rectal tissues to evaluate the distribution of SARS-CoV-2 antigen and immune cell infiltrations.

resultsThe patient had fever and cough on day 3 postoperatively, was diagnosed with COVID-19 on day 7, and was discharged from the hospital on day 41. RNA of SARS-CoV-2 was detected in surgically resected rectal specimens but not in samples collected 37 days after discharge. Notably, coincident with rectal tissues of surgical specimens testing nucleic acid positive for SARS-CoV-2, typical coronavirus virions in rectal tissue were observed under electron microscopy. Moreover, abundant lymphocytes and macrophages (some were SARS-CoV-2 positive) infiltrating the lamina propria were found with no significant mucosal damage.

conclusionsWe first report the direct evidence of active SARS-CoV-2 replication in a patient's rectum during the incubation period, which might explain SARS-CoV-2 fecal-oral transmission.

Indexed as

COVID-19SARS-CoV-2HospitalizationHumansIntestinesPatient DischargeRNA, ViralRNA, Viralcoronavirus disease 2019COVID-19intestinal infection rectal cancerSARS-CoV-2

Identifiers

PMID32638022
PMCPMC7454471

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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.