Methicillin resistant Staphylococcus aureus outbreak in a neonatal intensive care unit

Seema Irfan1, Imran Ahmed1, Farida Lalani2

  • 1Department of Pathology & Laboratory Medicine, Aga Khan University Hospital, Karachi, Pakistan.

Insights

Methicillin-resistant Staphylococcus aureus (MRSA) outbreaks in neonatal intensive care units (NICUs) pose risks. Prompt identification and control measures, including staff screening and decolonization, are crucial for patient safety.

Area of Science:

  • Infectious Diseases
  • Public Health
  • Neonatology

Background:

  • Rising global disease burdens necessitate robust infection control.
  • Healthcare workers (HCWs) colonized with methicillin-resistant Staphylococcus aureus (MRSA) can transmit the pathogen to vulnerable patients.
  • Neonatal intensive care units (NICUs) are high-risk environments for such transmissions.

Observation:

  • An outbreak of MRSA occurred in a level-II NICU in Pakistan.
  • Five neonates tested positive for MRSA.
  • One HCW was found colonized with MRSA, with an antibiogram matching the outbreak strain.

Findings:

  • Simultaneous implementation of multiple infection control measures was effective in curbing the outbreak.
  • Screening of NICU staff and environmental cultures identified the source.
  • Decolonization and redeployment of colonized HCWs were key interventions.

Implications:

  • Early identification of outbreaks is critical for effective control.
  • Comprehensive infection control strategies are essential in NICUs to protect neonates.
  • While an epidemiological link was found, molecular confirmation of HCW transmission was not achieved in this instance.

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