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Published on: February 23, 2014
Acute encephalitis associated to a respiratory infection due to Chlamydophila pneumoniae
A Elargoubi1, P O Verhoeven, F Grattard
1Laboratoire de bactériologie-virologie-hygiène, hôpital Nord, CHU de Saint-Étienne, 42055 Saint-Étienne cedex 02, France.
Insights
Chlamydophila pneumoniae, a common respiratory pathogen, can rarely cause severe acute neurological infections like encephalitis. Early diagnosis and treatment are crucial for a good outcome, as seen in this pediatric case.
Area of Science:
- Neurology
- Infectious Diseases
- Microbiology
Background:
- Chlamydophila pneumoniae is a frequent cause of respiratory tract infections.
- Severe neurological complications, such as acute encephalitis, are rarely associated with C. pneumoniae.
Observation:
- A 12-year-old child presented with symptoms of encephalitis and respiratory illness.
- The patient had no significant prior medical history.
Findings:
- Multiplex PCR detected C. pneumoniae DNA in respiratory secretions.
- Serological tests confirmed C. pneumoniae infection with IgM and IgG antibodies.
- C. pneumoniae was not detected in cerebrospinal fluid (CSF).
- Treatment with macrolides resulted in a favorable outcome without sequelae.
Implications:
- This case highlights the potential for C. pneumoniae to cause acute encephalitis.
- Clinicians should consider C. pneumoniae in the differential diagnosis of encephalitis, especially with concurrent respiratory symptoms.
- Further research may elucidate the mechanisms linking C. pneumoniae to neurological manifestations.
Objective:
Chlamydophila pneumoniae is a common agent of respiratory infections. Severe acute neurological infections are very infrequently linked to this bacterium. We report such a case and give a rapid overview of published cases of acute encephalitis occurring after a respiratory infection due to C. pneumoniae.
Patient And Methods:
A 12-year-old child without any prior medical history was hospitalized for encephalitis associated to respiratory symptoms.
Results:
C. pneumoniae DNA was identified by multiplex PCR assay in respiratory secretions and C. pneumoniae IgM and IgG antibodies were assessed in the serum. This bacterium was not detected in CSF, nor was any other pathogen. A macrolide treatment was prescribed for two weeks. The outcome was good without any sequels.
Conclusions:
This observation correlates to the few similar cases reported in the medical literature. C. pneumoniae must be suggested in the etiological diagnosis of acute encephalitis, notably in a context of respiratory infection, when no more common cause can be identified.
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