Evidence map›Paper›PMID 34193063›Full record

ReviewBMC infectious diseases2021

A case of chlamydia psittaci caused severe pneumonia and meningitis diagnosed by metagenome next-generation sequencing and clinical analysis: a case report and literature review.

Yunfeng Shi, Junxian Chen, Xiaohan Shi, Jiajia Hu, Hongtao Li, Xiaojie Li, Yanhong Wang, Benquan Wu

Open access · goldAbstract readCase ReportsReview
In one paragraph

Review in BMC infectious diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed, 2 pooled it
7.6field-weighted citation impact, top 2% 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

68 citing papers in PubMed, 2 syntheses or guidelines pooled it, 83 citations in OpenAlex.

  1. Pooled it
  2. High rates of Treponema pallidum, Neisseria gonorrhoeae, Chlamydia trachomatis, or Trichomonas vaginalis co-infection in people with HIV: a systematic review and meta-analysis.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2025
    Pooled it
  3. Chlamydia psittaci Meningitis, Chile, 2023.Emerging infectious diseases · 2026
    Article
  4. Rapid diagnosis ofExperimental and therapeutic medicine · 2026
    Article
  5. Observational
  6. Article
  7. Targeted next-generation sequencing improves diagnosis and antimicrobial stewardship in Chlamydia psittaci pneumonia.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2026
    Article
  8. Article
  9. SevereFrontiers in medicine · 2026
    Article
  10. Article
  11. Antimicrobial Management of SevereInfection and drug resistance · 2026
    Review
  12. Article
  13. Article
  14. Clinical Characteristics of 40 Cases ofInfection and drug resistance · 2026
    Article
  15. Article
  16. Article
  17. Article
  18. Clinical management and pharmaceutical care of severeFrontiers in cellular and infection microbiology · 2026
    Review
  19. Frontiers in cellular and infection microbiology · 2026
    Review
  20. Article

8 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

8 authors at 1 institution in 1 country.

Yunfeng Shi *Medical Intensive Care Unit, Department of Respiratory and Critical Care Medicine, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China.
Junxian Chen *Medical Intensive Care Unit, Department of Respiratory and Critical Care Medicine, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China.
Xiaohan ShiMedical Intensive Care Unit, Department of Respiratory and Critical Care Medicine, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China. shiningxh@yeah.net.
Jiajia HuMedical Intensive Care Unit, Department of Respiratory and Critical Care Medicine, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China.
Hongtao LiMedical Intensive Care Unit, Department of Respiratory and Critical Care Medicine, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China.
Xiaojie LiDepartment of Laboratory Medicine, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China.
Yanhong WangMedical Intensive Care Unit, Department of Respiratory and Critical Care Medicine, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China.
Benquan WuMedical Intensive Care Unit, Department of Respiratory and Critical Care Medicine, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China. zswbq@163.com.ORCID http://orcid.org/0000-0002-1622-7993
Sun Yat-sen University · CN

Funding

Science and Technology Planning Project of Guangdong Province 2017A020215177
6 · The paper itself

Abstract

backgroundPsittacosis, which is also known as parrot fever, is Chlamydia psittaci (C. psittaci) caused infectious disease. The clinical manifestations vary from asymptomatic infection to severe atypical pneumonia or even fatal meningitis. Early recognition of psittacosis is difficult because of its nonspecific clinical manifestations. Culture and gene probe techniques for C. psittaci are not available for routine clinical use, which makes the diagnosis difficult too. Although psittacosis has increasingly been recognized and reported in recent years, cure of severe pneumonia complicated with meningitis, with etiologic diagnosis aided by the use of metagenomic next-generation sequencing (mNGS), is still uncommon. So, it is necessary to report and review such potentially fatal case. CASE PRESENTATION: This report describes a 54-year-old woman with C. psittaci caused severe atypical pneumonia and meningitis. She presented with symptoms of fever, dry cough and dyspnea, accompanied by prominent headache. Her condition deteriorated rapidly to respiratory failure and lethargy under the treatment of empirical antibacterial agents, and was treated with invasive mechanical ventilation soon. She denied contact with birds, poultry or horses, but unbiased mNGS of both the bronchoalveolar lavage fluid (BALF) and the cerebrospinal fluid (CSF) identified sequence reads corresponding to C. psittaci infection, and there was no sequence read corresponding to other probable pathogens. Combined use of targeted antimicrobial agents of tetracyclines, macrolides and fluoroquinolones was carried out, and the patient's condition improved and she was discharged home 28 days later. Her status returned close to premorbid condition on day 60 of follow-up.

conclusionsWhen clinicians come across a patient with atypical pneumonia accompanied by symptoms of meningitis, psittacosis should be taken into consideration. mNGS is a promising detection method in such condition and is recommended.

Indexed as

High-Throughput Nucleotide SequencingMetagenomeAnimalsAnti-Infective AgentsChlamydial PneumoniaChlamydophila psittaciFemaleFluoroquinolonesHumansMacrolidesMeningitisMiddle AgedPsittacosisTetracyclinesTreatment OutcomeAnti-Infective AgentsFluoroquinolonesMacrolidesTetracyclinesCase reportChlamydia psittaciMeningitisMetagenome next-generation sequencingPsittacosisSevere pneumonia

Identifiers

PMID34193063
PMCPMC8243071
OpenAlexW3173777132

What OpenQuestion holds

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LicenceCC BY
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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.