SynthesisEpidemiology and infection2017
Chlamydia psittaci (psittacosis) as a cause of community-acquired pneumonia: a systematic review and meta-analysis.
Synthesis in Epidemiology and infection, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 162 papers, 4 of them syntheses that pooled it.
What it found
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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.
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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.
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Who cites it
162 citing papers in PubMed, 4 syntheses or guidelines pooled it, 219 citations in OpenAlex.
- Gestational psittacosis: a systematic review of clinical manifestations and outcomes.BMC infectious diseases · 2026Pooled it
- Global prevalence of psittacosis in outbreaks: a systematic review and meta-analysis.BMC public health · 2025Pooled it
- Clinical features and prognostic predictors of C. Psittaci Pneumonia: a systematic review and individual patient meta-analysis.BMC pulmonary medicine · 2025Pooled it
- Animal sources for zoonotic transmission of psittacosis: a systematic review.BMC infectious diseases · 2020Pooled it
- Clinical, laboratory, and radiological features of community-acquired pneumonia due toAnnals of medicine · 2026Article
- Current status and challenges in the diagnosis and treatment of psittacosis.Infectious diseases & immunity · 2026Review
- Rapid diagnosis ofExperimental and therapeutic medicine · 2026Article
- Clinical characteristics of Chlamydia psittaci pneumonia diagnosed by next-generation sequencing: An observational study.Medicine · 2026Observational
- Computed tomography findings and severity scores in Chlamydia psittaci pneumonia: a retrospective study of 69 cases with clinical correlation.BMC infectious diseases · 2026Article
- Application of BALF combined with tNGS for detecting Chlamydia psittaci in resource-limited areas: lessons learned from the 2025 temporally associated case series investigation.BMC infectious diseases · 2026Article
- Three Fatal Gestational Psittacosis Cases Caused by Chlamydia psittaci Strains Belonging to Closely Related Lineages, Japan.Emerging infectious diseases · 2026Review
- 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 · 2026Article
- Molecular detection of Chlamydia psittaci in wild birds, broiler chickens, and sheep in Egypt: a public health concern.BMC veterinary research · 2026Article
- Observational
- Molecular Evidence of Zoonotic Pathogens in Free-Living Wild Birds: A Greek Surveillance Study.Pathogens (Basel, Switzerland) · 2026Article
- Article
- Clinical characteristics and prognosis of patients with Chlamydia psittaci pneumonia identified by metagenomic next-generation sequencing.BMC infectious diseases · 2026Article
- Early diagnosis and therapy of Chlamydia psittaci pneumonia: insights from chest CT, tNGS, and omadacycline in 34 cases.Frontiers in medicine · 2026Article
- Clinical management and pharmaceutical care of severeFrontiers in cellular and infection microbiology · 2026Review
- Clinical Features and Risk Factors for Rhabdomyolysis in Patients withInfection and drug resistance · 2026Article
102 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Psittacosis is a zoonotic infectious disease caused by the transmission of the bacterium Chlamydia psittaci from birds to humans. Infections in humans mainly present as community-acquired pneumonia (CAP). However, most cases of CAP are treated without diagnostic testing, and the importance of C. psittaci infection as a cause of CAP is therefore unclear. In this meta-analysis of published CAP-aetiological studies, we estimate the proportion of CAP caused by C. psittaci infection. The databases MEDLINE and Embase were systematically searched for relevant studies published from 1986 onwards. Only studies that consisted of 100 patients or more were included. In total, 57 studies were selected for the meta-analysis. C. psittaci was the causative pathogen in 1·03% (95% CI 0·79-1·30) of all CAP cases from the included studies combined, with a range between studies from 0 to 6·7%. For burden of disease estimates, it is a reasonable assumption that 1% of incident cases of CAP are caused by psittacosis.
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Registered trials
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.