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Microbiology of the tonsils and adenoids in a pediatric population
R M DeDio1, L W Tom, K L McGowan
1Division of Otolaryngology, Children's Hospital of Philadelphia, PA 19104.
Insights
The tonsils and adenoids of children harbor common bacteria like Streptococcus and Haemophilus, with no anaerobes found. These findings are consistent regardless of whether surgery is for infection or airway issues.
Area of Science:
- Otolaryngology
- Microbiology
- Pediatric Health
Background:
- Tonsils and adenoids are key sites for pediatric respiratory infections and airway obstruction.
- Understanding the microbial flora is crucial for diagnosing and treating related conditions.
Purpose of the Study:
- To identify and quantify the bacterial flora in tonsil and adenoid tissues of children.
- To compare microbial findings between children undergoing surgery for recurrent infections versus airway obstruction.
Main Methods:
- Core tissue samples from 50 children undergoing tonsillectomy/adenoidectomy were cultured aerobically and anaerobically.
- Bacterial colony counts were performed.
- Isolates were identified and categorized as potential pathogens.
Main Results:
- Common aerobic isolates included alpha-hemolytic streptococci, Neisseria, Haemophilus, Staphylococcus aureus, and Corynebacterium.
- No anaerobic bacteria were detected.
- Potential pathogens (Haemophilus, S. aureus, beta-hemolytic streptococci, S. pneumoniae) were found in 40 patients, with 73% sharing common pathogens between tonsil and adenoid tissue. Haemophilus (54%) and S. aureus (46%) were most frequent.
Conclusions:
- The microbial composition of tonsils and adenoids is similar in terms of bacterial numbers and types.
- The prevalence of potential pathogens does not differ significantly between children operated on for recurrent infections or airway obstruction.
- Findings suggest a common bacterial etiology in pediatric adenotonsillar issues.
Abstract:
To investigate the microbial flora of the tonsils and adenoids, the core tissue from the tonsils and adenoids of 50 children undergoing tonsillectomy and adenoidectomy for either recurrent infection or airway obstruction was cultured aerobically and anaerobically, and the number of bacterial colonies was quantitated. The most common organisms isolated were alpha-hemolytic streptococci, nonpathogenic Neisseria species, Haemophilus species, Staphylococcus aureus, and Corynebacterium species. No anaerobes were identified. Bacterial isolates from the tonsils and adenoids were similar in number and frequency of occurrence. Potential pathogenic bacteria (Haemophilus species, S aureus, beta-hemolytic streptococci, and Streptococcus pneumoniae) were identified in 40 patients. Seventy-three percent of these patients shared a common pathogen in tonsil and adenoid tissue. Haemophilus species were recovered in 54% of patients and S aureus in 46%. No significant difference exists between the type and number of pathogens in patients undergoing adenotonsillectomy for recurrent infection or obstruction.