ArticleEuropean journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology2012
Distinctive features between community-acquired pneumonia (CAP) due to Chlamydophila psittaci and CAP due to Legionella pneumophila admitted to the intensive care unit (ICU).
Article in European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 2 of them syntheses that pooled it.
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15 citing papers in PubMed, 2 syntheses or guidelines pooled it, 35 citations in OpenAlex.
- Prevalence of atypical pathogens in patients with severe pneumonia: a systematic review and meta-analysis.BMJ open · 2023Pooled it
- Animal sources for zoonotic transmission of psittacosis: a systematic review.BMC infectious diseases · 2020Pooled it
- Clinical characteristics ofFrontiers in medicine · 2025Article
- Epidemiological characteristics of human psittacosis in Guangdong Province, China, 2019-2024.Frontiers in public health · 2025Article
- Distinction of clinical features and microbiological methods betweenAnnals of medicine · 2024Article
- Early discontinuation of combination antibiotic therapy in severe community-acquired pneumonia: a retrospective cohort study.BMC infectious diseases · 2023Article
- Psittacosis caused severe community-acquired pneumonia accompanied by acute hypoxic respiratory failure: a multicenter retrospective cohort study from China.BMC infectious diseases · 2023Article
- Identification and comparison of Chlamydia psittaci, Legionella and Mycoplasma pneumonia infection.The clinical respiratory journal · 2023Article
- 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.BMC infectious diseases · 2021Review
- Gestational Psittacosis With Secondary Hemophagocytic Syndrome: A Case Report and Literature Review.Frontiers in medicine · 2021Article
- Clinical Analysis of Metagenomic Next-Generation Sequencing ConfirmedInfection and drug resistance · 2021Article
- Application of metagenomic next-generation sequencing (mNGS) combined with rapid on-site cytological evaluation (ROSCE) for the diagnosis of Chlamydia psittaci pneumonia.International journal of clinical and experimental pathology · 2021Article
- Next-generation sequencing diagnosis of severe pneumonia from fulminant psittacosis with multiple organ failure: a case report and literature review.Annals of translational medicine · 2020Article
- Community-acquired pneumonia related to intracellular pathogens.Intensive care medicine · 2016Review
- Applicability assessment of ceramic microbeads coated with hydroxyapatite-binding silver/titanium dioxide ceramic composite earthplus™ to the eradication of Legionella in rainwater storage tanks for household use.International journal of nanomedicine · 2015Article
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Authors and funding
9 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The spectrum of community-acquired pneumonia (CAP) due to Chlamydophila psittaci ranges from mild, self-limited CAP, to acute respiratory failure. We performed a retrospective study of 13 consecutive patients with CAP due to C. psittaci and 51 patients with legionellosis admitted in one intensive care unit (ICU) (1993-2011). As compared to patients with legionellosis, patients with psittacosis were younger (median age 48 [38-59] vs. 60 [50-71] years, p = 0.007), less frequently smokers (38 vs. 79 %, p < 0.001), with less chronic disease (15 vs. 57 %, p = 0.02), and longer duration of symptoms before admission (median 6 [5-13] vs. 5 [3-7] days, p = 0.038). They presented with lower Simplified Acute Physiology Score II (median 28 [19-38] vs. 39 [28-46], p = 0.04) and less extensive infiltrates on chest X-rays (median 2 [1-3] vs. 3 [3-4] lobes, p = 0.007). Bird exposure was mentioned in 100 % of psittacosis cases, as compared to 5.9 % of legionellosis cases (p < 0.0001). Extrapulmonary manifestations, biological features, and mortality (15.4 vs. 21.6 %, p = 0.62) were similar in both groups. In conclusion, severe psittacosis shares many features with severe legionellosis, including extrapulmonary manifestations, biological features, and outcome. Psittacosis is an important differential diagnosis for legionellosis, especially in cases of bird exposure, younger age, and more limited disease progression over the initial few days.
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