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Updated: Jun 20, 2026

Strategies to Enhance Cultivation of Anaerobic Bacteria from Gastrointestinal Tract of Chicken

Strategies to Enhance Cultivation of Anaerobic Bacteria from Gastrointestinal Tract of Chicken

Published on: May 10, 2024

Decrease in anaerobe-related bacteraemias and increase in Bacteroides species isolation rate from 1998 to 2007: a

Tsilia Lazarovitch¹, Sarit Freimann, Galina Shapira

¹Microbiology laboratory Assaf Harofeh Medical Center, Zeriffin, Israel. zlazarovitch@asaf.health.gov.il

|September 29, 2009

Summary

Anaerobic bacteraemias decreased, but Bacteroides species increased significantly. This highlights the importance of anaerobic blood cultures, especially for patients with complex conditions like hypertension and diabetes.

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Last Updated: Jun 20, 2026

Strategies to Enhance Cultivation of Anaerobic Bacteria from Gastrointestinal Tract of Chicken

Strategies to Enhance Cultivation of Anaerobic Bacteria from Gastrointestinal Tract of Chicken

Published on: May 10, 2024

Area of Science:

Clinical microbiology
Infectious diseases
Epidemiology

Background:

Conflicting data exist on the incidence of anaerobic bacteraemias.
The role of anaerobic blood cultures in diagnosing these infections needs clarification.

Purpose of the Study:

To determine the prevalence of anaerobic bacteraemias.
To evaluate the significance of anaerobic blood cultures in a university hospital setting in Israel.

Main Methods:

Retrospective analysis of anaerobic blood culture bottles from January 1998 to December 2007.
Comparison of patient medical records from 1998-1999 and 2006-2007 for Bacteroides-related bacteraemia cases.

Main Results:

Overall anaerobic-related bacteraemias decreased during the study period.
Bacteroides species isolation from blood cultures significantly increased from 18% to 43%.
Patients with Bacteroides bacteraemia showed a marked increase in complex underlying diseases, including hypertension, diabetes mellitus type II, and ischemic heart disease.

Conclusions:

Despite a low percentage of positive anaerobic blood cultures, the rising incidence of Bacteroides bacteraemia is notable.
The increasing prevalence of comorbidities in affected patients underscores the continued importance of anaerobic blood cultures for diagnosis and management.