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Infection with Streptococcus milleri
Abstract:
Streptococcus milleri is unique among the viridans streptococci because it produces abscesses. Five serious S. milleri infections were seen in our hospital in 1 year. The English literature dealing with S. milleri was reviewed. An infection caused by S. milleri is often associated with a gastro-intestinal source. Thus, the speciation of viridans streptococci from pus or blood cultures is clinically relevant. The identification of S. milleri from blood cultures suggests the possibility of serious purulent infection, the source of which may lie in the gastro-intestinal tract. The resultant clinical approach to S. milleri infection is discussed.
Insights
Streptococcus milleri infections can cause serious abscesses, often originating from the gastro-intestinal tract. Identifying this bacterium in blood cultures signals potential severe purulent infections requiring clinical attention.
Area of Science:
- Microbiology
- Infectious Diseases
Background:
- Viridans streptococci are a diverse group, but Streptococcus milleri possesses unique pathogenic potential.
- Abscess formation is a distinguishing characteristic of S. milleri infections.
Observation:
- A review of English literature and a local hospital's experience revealed five serious S. milleri infections within one year.
- These infections were frequently linked to gastro-intestinal sources.
Findings:
- Speciation of viridans streptococci from pus or blood cultures is clinically significant.
- The presence of S. milleri in blood cultures indicates a high likelihood of serious purulent infection, potentially with a gastro-intestinal origin.
Implications:
- Accurate identification of S. milleri is crucial for diagnosing and managing severe infections.
- Understanding the gastro-intestinal link aids in source identification and treatment strategies for S. milleri infections.