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Streptococcal vertebral osteomyelitis: multiple faces of the same disease
Summary
Streptococcal vertebral osteomyelitis (SVO) is increasingly common and presents diverse clinical patterns. Non-viridans SVO mimics Staphylococcus aureus infections, while viridans SVO is linked to endocarditis and sub-acute presentations.
Area of Science:
- Infectious Diseases
- Microbiology
- Clinical Epidemiology
Background:
- Vertebral osteomyelitis (VO) is often attributed to Staphylococcus aureus, with Streptococcus species considered less significant.
- Recent decades show an increasing incidence of VO and specifically SVO.
Purpose of the Study:
- To describe a large cohort of SVO cases.
- Analyze clinical features of SVO based on Streptococcus species.
- Compare SVO with Staphylococcus aureus VO.
Main Methods:
- Retrospective, multicenter, observational clinical study (1991-2011).
- Incidence study of VO and SVO.
- Statistical comparison between SVO species and S. aureus VO.
Main Results:
- Increasing incidence of VO and SVO observed.
- Non-viridans SVO (S. pneumoniae, S. agalactiae, S. pyogenes) presented with fever, neurological symptoms, and abscesses, mimicking S. aureus VO.
- Viridans SVO showed sub-acute presentation and was associated with endocarditis.
- Concomitant infections in non-viridans SVO were linked to S. pneumoniae.
Conclusions:
- SVO exhibits varied clinical presentations.
- Viridans SVO is associated with endocarditis and sub-acute disease.
- Non-viridans SVO mimics acute S. aureus VO.
- The rising incidence suggests a shifting epidemiological landscape for SVO.
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