Burkholderia cepacia complex: beyond pseudomonas and acinetobacter

Area of Science:

• Clinical Microbiology
• Antimicrobial Resistance
• Bacterial Pathogenesis

Background:

• Burkholderia cepacia complex (BCC) is a significant nosocomial pathogen, particularly in patients with prior broad-spectrum antibiotic exposure.
• BCC infections, including bacteremia and respiratory tract infections, are challenging to treat due to high intrinsic antimicrobial resistance.
• Patients with cystic fibrosis and chronic granulomatous disease are at increased risk of BCC infection.

Purpose of the Study:

• To highlight the clinical significance of Burkholderia cepacia complex (BCC) as a nosocomial pathogen.
• To emphasize the challenges in identifying BCC in routine clinical laboratories.
• To underscore the dual role of BCC in human health and its agricultural/bioremediation potential.

Main Methods:

• Literature review of BCC characteristics, clinical significance, and identification challenges.
• Analysis of BCC's antimicrobial resistance patterns and environmental persistence.
• Exploration of BCC's genotypic diversity and non-clinical applications.

Main Results:

• BCC exhibits high intrinsic resistance, leading to difficult-to-treat infections and potential mortality.
• BCC can persist in hospital environments, contributing to outbreaks in intensive care and oncology units.
• Accurate identification of BCC is often poor in routine laboratories, with misidentification as Pseudomonas spp. prevalent in some regions like India.

Conclusions:

• Accurate and timely identification of Burkholderia cepacia complex is critical for effective patient management and infection control.
• Further research and improved laboratory diagnostics are needed to address the challenges posed by BCC.
• The multifaceted nature of BCC, encompassing pathogenicity and beneficial properties, warrants continued investigation.