Use of a DNA typing method to investigate a fatal perinatal infection due to Staphylococcus aureus

C Ramanantsoa1, S Chatellier, P Harriau

  • 1Départment de Microbiologíe Médicale et Moléculaire, URA CNRS 1334, CHU Bretonneau, Tours, France.

Insights

A fatal Staphylococcus aureus perinatal infection was traced to the mother's own bacteria, not hospital acquisition. This highlights the need for maternal screening before labor induction for non-medical reasons.

Area of Science:

  • Microbiology
  • Genetics
  • Perinatal Medicine

Background:

  • Perinatal infections pose significant risks to newborns.
  • Staphylococcus aureus is a common cause of bacterial infections.
  • Identifying the source of infection is crucial for effective treatment and prevention.

Observation:

  • A fatal perinatal infection caused by Staphylococcus aureus occurred following multiple cervical examinations before labor induction.
  • The infection was investigated using random amplified polymorphic DNA analysis.

Findings:

  • Random amplified polymorphic DNA analysis identified the source of the Staphylococcus aureus infection as the mother's endogenous genital carriage and urinary tract infection.
  • The neonate was subsequently infected by the same strain responsible for chorioamnionitis.
  • The infection was not acquired nosocomially (in the hospital).

Implications:

  • Suggests systematic screening of maternal genital flora for virulent strains before non-medically indicated labor induction.
  • Demonstrates the utility of molecular typing methods in tracing infection origins and potentially determining staff responsibility in healthcare settings.

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