[Outbreak of multiresistant Acinetobacter baumannii infection]

Area of Science:

• Infectious Diseases
• Microbiology
• Public Health

Background:

• Nosocomial infections caused by multidrug-resistant bacteria pose a significant threat, particularly in intensive care units.
• Acinetobacter baumannii, a gram-negative bacterium, is increasingly implicated in critical care settings.
• This study details an outbreak of multidrug-resistant Acinetobacter baumannii in four burn patients.

Observation:

• The outbreak strain, resistant to most antibiotics but sensitive to polymyxin B, was introduced by a transferred patient.
• The multidrug-resistant Acinetobacter baumannii was detected on a shared shower trolley, indicating a potential source of transmission.
• Rigorous infection control measures, including ward closure and enhanced hygiene, were implemented.

Findings:

• Isolation of infected patients and thorough disinfection of the ward successfully eradicated the outbreak strain.
• Restriction endonuclease analysis confirmed the identity of the outbreak strain.
• No recurrence of the resistant strain was observed after patient discharge and terminal cleaning.

Implications:

• Healthcare facilities should consider screening patients transferred from regions with high rates of antibiotic resistance.
• Enhanced surveillance and infection control protocols are crucial for managing multidrug-resistant organisms in healthcare settings.
• This case highlights the importance of vigilance in preventing and controlling outbreaks of resistant bacteria.