Identifying and controlling a multiresistant Pseudomonas aeruginosa outbreak in a Latin-American cancer centre and...

Area of Science:

• Infectious Diseases
• Oncology
• Microbiology

Background:

• Pseudomonas aeruginosa is a significant pathogen, particularly for immunocompromised cancer patients.
• Multiresistant P. aeruginosa (MRPA) poses a growing threat due to antibiotic exposure and infection control failures.

Purpose of the Study:

• To report and analyze a multiresistant P. aeruginosa outbreak in a cancer treatment center.
• To identify risk factors for MRPA colonization or infection in cancer patients.
• To evaluate the effectiveness of an intervention strategy in controlling the MRPA outbreak.

Main Methods:

• Conducted a case-control study to identify risk factors associated with MRPA.
• Utilized molecular analysis to confirm the outbreak and its source.
• Implemented a multifaceted control strategy including enhanced hygiene, isolation, antibiotic stewardship, and specialized patient care.

Main Results:

• Mechanical ventilation was identified as the primary risk factor for MRPA colonization and infection.
• Molecular typing confirmed the outbreak and linked cases.
• The implemented multifaceted strategy successfully controlled the MRPA outbreak and transmission.

Conclusions:

• Multiresistant P. aeruginosa outbreaks in cancer centers require prompt and comprehensive management.
• Targeted interventions, especially for high-risk patients on mechanical ventilation, are crucial.
• The described strategy demonstrates potential effectiveness in controlling MRPA in resource-limited settings among vulnerable cancer patients.