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[Potential pathogenic throat bacterial flora in acute successive pharyngitis and tonsillitis in children]
1Zakład Mikrobiologii Lekarskiej AM w Poznaniu.
Insights
This study identified common bacteria in children with acute pharyngitis and tonsillitis, finding Staphylococcus aureus and Haemophilus species were most frequent. Treatment reduced the presence of these pathogens and mixed bacterial infections.
Area of Science:
- Microbiology
- Pediatric Infectious Diseases
Background:
- Acute pharyngitis and tonsillitis are common childhood infections.
- Identifying causative bacterial agents is crucial for effective treatment.
Purpose of the Study:
- To determine the frequency of specific bacterial pathogens in children with acute successive pharyngitis and tonsillitis.
- To assess changes in bacterial flora after treatment.
Main Methods:
- Throat specimens collected from children during three acute episodes and twice post-treatment.
- Microbiological analysis to identify Staphylococcus aureus, Haemophilus influenzae, Haemophilus parainfluenzae, beta-hemolytic streptococci, Enterobacteriaceae, and nonfermenting rods.
Main Results:
- Staphylococcus aureus was prevalent (55.1%-62%), followed by Haemophilus species (22%-40%).
- Beta-hemolytic streptococci (10.3%-16.2%) and Enterobacteriaceae (6.1%-16.25%) were also detected.
- Mixed bacterial pathogens, particularly S. aureus with H. influenzae/parainfluenzae or beta-hemolytic streptococci, were common.
- Post-treatment, isolation rates of S. aureus, H. influenzae, and H. parainfluenzae decreased significantly, as did mixed infections.
Conclusions:
- S. aureus and Haemophilus species are significant bacterial agents in pediatric acute pharyngitis and tonsillitis.
- Treatment effectively reduces the load of key pathogens and mixed bacterial flora.
Abstract:
The purpose of this work was to determine the frequency of occurrence of S. aureus, H. influenzae, H. parainfluenzae, beta-hemolytic streptococci, Enterobacteriaceae spp. and nonfermenting rods in a group of children suffering from acute successive pharyngitis and tonsillitis. Specimens were taken during three acute occurrences and twice after treatment from first and second acute occurrences. S. aureus was isolated from the throats of 55.1%-62% of the sick children. H. influenzae and H. parainfluenzae were isolated from about 22% to over 40% of the sick children, beta-haemolytic streptococci were isolated from 10.3%-16.2% of the sick children and Enterobacteriaceae spp. were isolated from the throats of 6.1%-16.25% of the sick children. Nonfermenting rods were isolated from only one sick child. Two or more possible bacterial pathogens were isolated from several sick children. Among them S. aureus with H. influenzae or with H. parainfluenzae or with beta-haemolytic streptococci were most often isolated. After treatment of these children, S. aureus, H. influenzae, H. parainfluenzae were more rarely isolated from the throat, and beta-haemolytic streptococci or Enterobacteriaceae spp. were isolated occasionally. Similarly, after treatment mixed potentially pathogenic bacterial flora were more rarely seen.