Document Detail

Oropharyngeal flora in healthy infants: observations and implications for cystic fibrosis care.
MedLine Citation:
PMID:  19360845     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: The purpose of this preliminary study was to determine normal oropharyngeal flora in healthy, non-CF infants in order to help care givers better interpret culture results obtained from infants with CF. METHODS: Oropharyngeal cultures were obtained from 104 healthy infants <12 months old. Cultures were obtained using the same methods as for CF patients and were inoculated onto routine CF culture media. Approximately 20 infants from each of 5 age groups (0-2 days, 3 days to <3 months, 3 months to <6 months, 6 months to <9 months or 9 months to <1 year) were included in the well child sample. In addition, we reviewed serial results of upper airway cultures obtained during the first year of life from 20 CF-affected infants whose diagnosis was suggested by newborn screening. RESULTS: Well infants in the first 48 hr of life had very few pathogenic organisms found in their oropharyngeal cultures; 1/21 had S. aureus. Of the 83 samples from infants over 48 hr of age, we found that 27% (23/83) had S. aureus in their oropharyngeal cultures. Many infants had polymicrobial cultures. Eleven percent of culture samples had E. coli, E. cloacae, H. influenzae, or M. catarrhalis. Three of 83 cultures were positive for non-mucoid Ps. aeruginosa (3.6%), while 2 others were positive for Ps. putida. CONCLUSION: Healthy infants can have multiple gram-negative and gram-positive organisms recovered from their oropharynx. S. aureus and enteric gram-negative organisms, including non-mucoid Ps. aeruginosa, can be found in the oropharynx of well children up to 1 year of age. Care should be taken to not over interpret the presence of some of these organisms in the oropharyngeal cultures of asymptomatic CF infants.
David Carlson; Elizabeth McKeen; Michael Mitchell; Brenda Torres; Richard Parad; Anne Marie Comeau; Brian P O'Sullivan
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Pediatric pulmonology     Volume:  44     ISSN:  1099-0496     ISO Abbreviation:  Pediatr. Pulmonol.     Publication Date:  2009 May 
Date Detail:
Created Date:  2009-04-27     Completed Date:  2009-08-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8510590     Medline TA:  Pediatr Pulmonol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  497-502     Citation Subset:  IM    
Copyright Information:
(c) 2009 Wiley-Liss, Inc.
Department of Pediatrics, University of Massachusetts Medical School and UMass Memorial Health Care, Worcester, Massachusetts, USA.
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MeSH Terms
Carrier State / microbiology*
Case-Control Studies
Cystic Fibrosis / microbiology*
Gram-Negative Aerobic Rods and Cocci / isolation & purification
Gram-Positive Cocci / isolation & purification
Infant, Newborn
Oropharynx / microbiology*
Reference Values

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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