Related Experiment Video
Updated: Aug 10, 2026

Isolation of Leukocytes from the Human Maternal-fetal Interface
Published on: May 21, 2015
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.
Abstract:
Reports of several streptococcal infections among babies after discharge from a maternity department initiated an epidemiologic study. Out of 100 infants in the 3 maternity wards 67% were colonized on the umbilicus with hemolytic streptococci group A. It was assumed that the spread had occurred from infant to infant in connection with the nursing. By means of new and strict hygienic routines, isolation and penicillin treatment of the colonized infants the spread was rapidly brought to an end. A retrospective study among the children delivered up to 6 weeks earlier showed that no less than 64% had had clinical signs of infection of possible streptococcal origin. Infections had also occurred among many family members. The observations emphasize the importance of strict hygienic routines and continuous bacteriologic surveillance in maternity departments, as well as close contact between maternity departments and health centers for children.
Related Concept Videos
Healthcare Associated Infections II: Preventive Measures
The best practices for preventing healthcare-associated infections include hand hygiene, patient risk...
Development of the Oral Microbiota
Investigation of Disease Outbreaks
Staphylococcal Skin Infections
Streptococcal Pharyngitis
Bacterial Meningitis I: Introduction

