Breastfeeding and mucosal and cutaneous colonization by Staphylococcus aureus in atopic children

Raissa Massaia Londero Chemello1, Elsa Regina Justo Giugliani, Renan Rangel Bonamigo

  • 1Sanitary Dermatology Outpatient Clinic of Porto Alegre (ADS - RS) and Central Laboratory of Public Health of Rio Grande do Sul (LACEN - RS) - Porto Alegre (RS), Brazil. raissalondero@gmail.com

Insights

Breastfeeding did not show a link to Staphylococcus aureus (S. aureus) colonization in infants with atopic dermatitis. Further research confirmed no association between breastfeeding and S. aureus presence in atopic children.

Area of Science:

  • Pediatric dermatology
  • Microbiology
  • Immunology

Background:

  • Atopic dermatitis (AD) development is complex, with controversial findings regarding breastfeeding's role.
  • The impact of Staphylococcus aureus (S. aureus) colonization via breastfeeding on AD pathogenesis remains unclear.

Purpose of the Study:

  • To investigate the association between breastfeeding and S. aureus colonization in infants diagnosed with atopic dermatitis.
  • To explore the relationship between maternal and infant S. aureus carriage.

Main Methods:

  • A transversal study involving atopic patients (4-24 months) and their mothers.
  • Collection of nasal and skin swabs from infants, and nasal swabs from mothers.
  • Univariate analysis using chi-square and Fischer Exact's tests to assess associations.

Main Results:

  • No significant association was found between breastfeeding and S. aureus colonization in infants' nares or skin.
  • S. aureus was isolated from 25.8% of breastfed infants' nares and 20.8% of non-breastfed infants' nares.
  • A high concordance (77.8%) in S. aureus carriage was observed between mothers and infants.

Conclusions:

  • Breastfeeding is not significantly associated with S. aureus muco-cutaneous colonization in atopic infants.
  • Maternal-infant S. aureus carriage concordance suggests other transmission routes or factors may be involved.
Abstract

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