Radiographic appearance of Chlamydia pneumoniae (TWAR strain) respiratory infections. CBPIS Study Group. Community-based Pneumonia Incidence Study.

McConnell, Connie; Plouffe, Joseph F.; File, T. M.; Mueller, C.; Wong, K. H.; Skelton, S K; Marston, Barbara J.; Breiman, Robert F.

doi:10.1148/radiology.192.3.8058954

Cited by 54 publications

(24 citation statements)

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“…In the present study, influenza virus type A and respiratory syncytial virus were the second and third most common copathogens, whereas, in the study of LIEBERMAN et al [22], they were M. pneumoniae and Legionella sp. MCCONNELL et al [23], in a study of 62 patients with C. pneumoniae pneumonia, divided the patients into those with primary infection (n=17) and those with recurrent infection (n=38). Seven (41%) with primary infection had a second respiratory pathogen present and seven (18%) in the recurrent infection group also had more than one respiratory pathogen present.…”

Section: Discussionmentioning

confidence: 99%

Chlamydiaspecies as a cause of community-acquired pneumonia in Canada

Marrie¹,

Peeling²,

Reid³

et al. 2003

Eur Respir J

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Chlamydia pneumoniaehas been implicated as a cause of community-acquired pneumonia (CAP) in several studies. However, there has been no comprehensive study of the role ofChlamydiaspecies (C. pneumoniae,C. psittaci(avian and feline strains) andC. pecorum) as a cause of CAP. The aim of the present study was to determine the role ofC. pneumoniae,C. psittaciandC. pecorumas causes of CAP.A prospective cohort observational study of CAP was conducted at 15 teaching centres in eight Canadian provinces between January 1996–October 1997. Acute (n=539) and convalescent (n=272) serum samples were obtained for determination of antibody titres toC. pneumoniae,C. psittaci,C. pecorum,C. trachomatis,Mycoplasma pneumoniae,Legionella pneumophilaserogroups I–VI,Streptococcus pneumoniaeand various respiratory viruses.Twelve of 539 (2.2%) patients had acuteC. pneumoniaepneumonia and an additional 32 (5.9%) had possible acute infection.C. pneumoniaewas the sole pathogen in 16 of 42 (38.1%) of these patients. The most common copathogens wereS. pneumoniae, respiratory syncytial virus and influenza virus type A.C. pneumoniaepneumonia patients were older and more likely to show congestive heart failure compared to bacteraemicS. pneumoniaepatients. The latter had a lower mean diastolic blood pressure, a higher white blood cell count and a lower arterial carbon dioxide tension. Two patients had antibody titres suggestive of recent infection with the feline strain ofC. psittaci.Although numericallyChlamydia pneumoniaeis an important cause of community-acquired pneumonia, no distinctive clinical features associated with this pathogen were detected in the present study. FelineChlamydia psittacimay cause a few cases of community-acquired pneumonia. AvianChlamydia psittacishould be considered only if there is a compatible epidemiological history.

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Section: Discussionmentioning

confidence: 99%

Chlamydiaspecies as a cause of community-acquired pneumonia in Canada

Marrie¹,

Peeling²,

Reid³

et al. 2003

Eur Respir J

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“…Previous reports on the radiological appearance of Chlamydial infection showed that homogeneous lobar or segmental shadows, and patchy ones were the common radiological abnormalities (12,13). Spreading of shadows within the same lung and also to the previously unaffected opposite lung have been seen in a few patients (12).…”

Section: T E R Re C O V E R (8) Our Patient Was Identified and Categmentioning

confidence: 98%

“…Spreading of shadows within the same lung and also to the previously unaffected opposite lung have been seen in a few patients (12). However, it has not been fully discussed, whether or not these radiological findings are simple deterioration or migration of shadows.…”

Section: T E R Re C O V E R (8) Our Patient Was Identified and Categmentioning

confidence: 99%

Chlamydial Infection Showing Migratory Pulmonary Infiltrates

et al. 2007

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“…Such cases of severe pneumonia often appear as interstitial shadows and present as ARDS (9)(10)(11)(12). Notably, the occurrence of interstitial pneumonia is considered to be evidence of reinfection with this pathogen (13). It has been reported that the 60-kDa protein of C. pneumoniae represents an antigen for delayed-type hypersensitivity, the presumptive cause of interstitial pneumonia and ARDS (13).…”

Section: Discussionmentioning

confidence: 99%

“…Notably, the occurrence of interstitial pneumonia is considered to be evidence of reinfection with this pathogen (13). It has been reported that the 60-kDa protein of C. pneumoniae represents an antigen for delayed-type hypersensitivity, the presumptive cause of interstitial pneumonia and ARDS (13). In case 1, the nature of the antibody profile indicated a significant possibility of C. pneumoniae reinfection.…”

Section: Discussionmentioning

confidence: 99%

Two Cases of Acute Respiratory Distress Syndrome with High Values of <i>Chlamydophila pneumoniae</i>-Specific Antibodies

et al. 2013

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We herein report two cases of acute respiratory distress syndrome (ARDS) with high values of Chlamydophila pneumoniae-specific antibodies. In the first case (a 65-year-old man), high levels of anti-C. pneumoniae antibodies (IgG and IgA) were detected on admission, and the anti-C. pneumoniae IgA level rose by Day 30. The patient was successfully treated with quinolone and steroids. In the second case (an 85-year-old man), abnormally high levels of anti-C. pneumoniae IgM were detected on admission. The patient did not recover, despite receiving treatment with several antibiotics and anti-inflammatory agents. Neither of the patients displayed other pathogen-specific antigens or antibodies. Chlamydophila pneumonia is usually mild, although it can cause severe interstitial pneumonia and ARDS in reinfected patients and the elderly.

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Radiographic appearance of Chlamydia pneumoniae (TWAR strain) respiratory infections. CBPIS Study Group. Community-based Pneumonia Incidence Study.

Abstract: Different radiographic patterns exist for the two types of acute C pneumoniae infection.

Cited by 54 publications

References 0 publications

Chlamydiaspecies as a cause of community-acquired pneumonia in Canada

Chlamydiaspecies as a cause of community-acquired pneumonia in Canada

Chlamydial Infection Showing Migratory Pulmonary Infiltrates

Two Cases of Acute Respiratory Distress Syndrome with High Values of <i>Chlamydophila pneumoniae</i>-Specific Antibodies

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