Anaerobes isolated from clinical material over three years

Area of Science:

• Medical Microbiology
• Clinical Bacteriology

Background:

• Anaerobic bacteria are significant pathogens in various infections.
• Understanding the prevalence and types of anaerobic bacteria is crucial for effective treatment.

Purpose of the Study:

• To analyze the spectrum of anaerobic bacteria isolated from clinical specimens over a three-year period.
• To identify the most frequently encountered anaerobic genera and species in a clinical setting.

Main Methods:

• Retrospective analysis of clinical specimens processed for anaerobic culture from 1992 to 1994.
• Standard anaerobic cultivation techniques using thioglycollate broth, enrichment media, and GasPak jars.
• Identification of isolates using the API system and specific tests for Clostridium perfringens, including sulfite-reduction and sporulation media.

Main Results:

• A total of 899 samples yielded anaerobic bacteria, with 964 anaerobic isolates identified.
• Wound swabs (266) and aspirates (106) were the most common specimen types.
• The predominant isolates were Peptostreptococcus species (299), Eubacterium species (188), Propionibacterium species (153), Bacteroides fragilis (149), Bacteroides species (95), and Clostridium perfringens (80).

Conclusions:

• This study provides valuable epidemiological data on anaerobic bacteria encountered in clinical specimens during the specified period.
• The findings highlight the importance of accurate and timely identification of anaerobic pathogens for appropriate patient management.
• Peptostreptococcus, Eubacterium, and Bacteroides species represent a significant proportion of clinical anaerobic isolates.