A novel and potentially valuable exposure measure: Escherichia coli in oral cavity and its association with child daycare center attendance

This study investigated the occurrence of Escherichia coli, an indicator of fecal contamination, in saliva samples from 141 children up to 36 months old, 53 not attending and 88 attending a child daycare center after exposure to a public daycare center and home environments. Two samples from each ch...

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Bibliographic Details
Published in:Journal of tropical pediatrics (1980) 2012-12, Vol.58 (6), p.517-520
Main Authors: Oliveira, Ageane Monteiro, Batista de Morais, Mauro, Morais, Tania Beninga
Format: Article
Language:English
Subjects:
Brazil
Child Day Care Centers
Child, Preschool
Confidence Intervals
Cross-Sectional Studies
Escherichia coli
Escherichia coli - isolation & purification
Escherichia coli Infections - diagnosis
Escherichia coli Infections - microbiology
Escherichia coli Infections - transmission
Female
Health Surveys
Humans
Infant
Male
Mouth - microbiology
Risk Factors
Saliva - microbiology
Time Factors
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Summary:This study investigated the occurrence of Escherichia coli, an indicator of fecal contamination, in saliva samples from 141 children up to 36 months old, 53 not attending and 88 attending a child daycare center after exposure to a public daycare center and home environments. Two samples from each child were collected on the same day at 07:00 and 15:00 h and plated on MacConkey agar for identification. Samples E. coli negative in the morning and positive in the afternoon were statistically associated with the condition of the child attending daycare center (Odds ratio = 2.72; 95% confidence interval = 1.15/6.46). Exposure to the daycare center environment favored the potential risk of transmission of enteropathogens, as demonstrated by the presence of E. coli in saliva. The method proved to be easy to sample, non-invasive and feasible in young children. The findings suggest a novel and potentially valuable exposure measure.
ISSN:0142-6338
1465-3664
DOI:10.1093/tropej/fms025