A new E. coli O group O158 associated with an outbreak of infantile enteritis

Insights

A special care baby unit experienced an outbreak of acute diarrhea. Escherichia coli O158 was identified as the cause in six infants, leading to three deaths.

Area of Science:

  • Neonatalogy
  • Infectious Disease Epidemiology
  • Microbiology

Background:

  • Special care baby units are vulnerable settings for infant infections.
  • Acute diarrhea outbreaks pose significant risks to vulnerable neonates.

Purpose of the Study:

  • To investigate an outbreak of acute diarrhea in a special care baby unit.
  • To identify the causative agent of the outbreak.

Main Methods:

  • Epidemiological investigation of affected infants.
  • Microbiological analysis, including isolation and characterization of Escherichia coli strains.
  • Serotyping of bacterial isolates to determine O and H antigens.

Main Results:

  • An outbreak of acute diarrhea affected six out of thirteen infants in the unit.
  • Three infants died as a consequence of the infection.
  • Escherichia coli with an unidentifiable O antigen and H23 flagellar antigen was isolated from all affected infants.
  • The previously unidentifiable O antigen was accepted into the international scheme as O158.

Conclusions:

  • Escherichia coli O158 was identified as the causative agent of the outbreak.
  • The outbreak highlights the potential severity of bacterial infections in special care baby units.
  • Prompt identification and characterization of pathogens are crucial for outbreak control.

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