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Streptococcus milleri causing infection in man
Summary
Streptococcus milleri is a common cause of pyogenic infections, often presenting as localized abscesses. Bloodstream infections indicate an occult abscess, with penicillin or erythromycin being the preferred treatments.
Area of Science:
- Microbiology
- Infectious Diseases
- Clinical Bacteriology
Background:
- Streptococcus milleri group bacteria are increasingly recognized in clinical settings.
- Understanding their microbiological and morphological characteristics is crucial for diagnosis and treatment.
Purpose of the Study:
- To characterize the microbiological and morphological features of Streptococcus milleri strains.
- To identify key features that typify the species.
- To understand the clinical significance and common manifestations of Strept. milleri infections.
Main Methods:
- Isolation and characterization of 151 strains of Streptococcus milleri.
- Routine bacteriological investigations.
- Analysis of clinical data associated with isolated strains.
Main Results:
- Identified constant microbiological and morphological features despite strain heterogeneity.
- Strept. milleri is a major cause of pyogenic infections with localized pus collections across organ systems.
- Bacteraemia frequently indicated the presence of an occult abscess; endocarditis was uncommon.
Conclusions:
- Penicillins and erythromycin are the recommended treatments for Strept. milleri infections.
- Early identification and appropriate antimicrobial therapy are essential for managing Strept. milleri-associated diseases.
- Bacteraemia serves as a critical marker for underlying abscesses.