Definitive identification of Bacillus anthracis--a review

Area of Science:

• Microbiology
• Bacteriology
• Taxonomy

Background:

• Bacillus anthracis and Bacillus cereus are closely related bacterial species.
• Accurate differentiation between these species is crucial, especially given recent concerns about Bacillus anthracis and bioaggression.
• Historically, identification issues were primarily of academic interest to taxonomists.

Purpose of the Study:

• To review the current methods for differentiating Bacillus anthracis and Bacillus cereus.
• To address the challenges in identifying borderline isolates.
• To propose future directions for accurate identification.

Main Methods:

• Review of existing literature on Bacillus anthracis and Bacillus cereus identification.
• Analysis of taxonomic challenges in differentiating closely related species.
• Discussion of the implications of bioaggression concerns on identification practices.

Main Results:

• Identification problems between Bacillus anthracis and Bacillus cereus are rare, typically limited to a few borderline isolates.
• Historically, ambiguous isolates were often discarded or misidentified.
• The increasing recognition of Bacillus anthracis's role in bioaggression has intensified the need for precise identification.

Conclusions:

• Accurate differentiation of Bacillus anthracis and Bacillus cereus is essential.
• Current identification methods may require refinement to address borderline cases.
• Future research should focus on developing robust methods for definitive identification, particularly in light of potential bioaggression threats.