Hemolytic streptococci among infants in a maternity department. Report of an outbreak

Insights

A study found Group A hemolytic streptococci colonized 67% of newborns in maternity wards, spreading through infant care. Strict hygiene and penicillin treatment halted the outbreak, preventing further infant and family infections.

Area of Science:

  • Medical Microbiology
  • Epidemiology
  • Public Health

Background:

  • Reports of streptococcal infections in newborns post-discharge prompted an investigation.
  • High colonization rates of hemolytic streptococci group A (67%) were identified in 100 infants across three maternity wards.
  • Infant-to-infant transmission during nursing was suspected as the primary spread mechanism.

Purpose of the Study:

  • To investigate the epidemiology of hemolytic streptococci group A in a maternity setting.
  • To evaluate the effectiveness of implemented infection control measures.
  • To highlight the significance of hygiene and surveillance in preventing neonatal infections.

Main Methods:

  • Epidemiologic study involving bacteriologic surveillance of 100 infants in maternity wards.
  • Implementation of strict hygienic routines, isolation, and penicillin treatment for colonized infants.
  • Retrospective analysis of clinical signs of infection in infants delivered up to six weeks prior.

Main Results:

  • Group A hemolytic streptococci colonized the umbilicus in 67% of surveyed infants.
  • Implemented interventions (hygiene, isolation, penicillin) effectively stopped the spread.
  • A retrospective study revealed 64% of earlier deliveries had signs of possible streptococcal infection, affecting families too.

Conclusions:

  • Strict hygienic routines and continuous bacteriologic surveillance are crucial in maternity departments.
  • Prompt intervention, including isolation and antibiotic treatment, can control streptococcal outbreaks.
  • Collaboration between maternity departments and child health centers is vital for ongoing surveillance and care.

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