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Updated: Jun 26, 2026

Cancer Borealis Stomatogastric Nervous System Dissection
Published on: March 23, 2009
Streptococcus anginosus-constellatus infections of the nervous system
Abstract:
Two patients are presented with central nervous system infections due to an uncommon type of viridans streptococci, S anginosus-constellatus. Of the various streptococci, S pneumoniae is the most common etiologic agent in meningitis, but many species, including those which are facultative anaerobes or microaerophiles, have been isolated from cerebrospinal fluid, subdural empyema, and abscesses involving the brain and epidural space.
Insights
Central nervous system infections can be caused by uncommon bacteria like Streptococcus anginosus-constellatus. This highlights the diverse range of streptococci species capable of causing serious infections beyond the typical Streptococcus pneumoniae.
Area of Science:
- Neuroscience
- Infectious Diseases
- Microbiology
Background:
- Streptococcus pneumoniae is the most common bacterial cause of meningitis.
- Various streptococci species can infect the central nervous system, including the brain and epidural space.
- Facultative anaerobes and microaerophiles are among the streptococci found in cerebrospinal fluid, subdural empyema, and abscesses.
Observation:
- This report details two cases of central nervous system infections.
- The causative agent identified was an uncommon viridans streptococci species, Streptococcus anginosus-constellatus.
Findings:
- Streptococcus anginosus-constellatus can lead to severe central nervous system infections.
- The spectrum of streptococcal pathogens causing CNS infections is broader than previously emphasized.
Implications:
- Clinicians should consider a wider range of streptococci in the differential diagnosis of CNS infections.
- Further research into the pathogenicity of less common streptococci species is warranted.
- Improved diagnostic approaches may be needed to identify these uncommon pathogens efficiently.
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