Azithromycin compared with clarithromycin for the treatment of streptococcal pharyngitis in children

Area of Science:

• Pediatric infectious diseases
• Microbiology
• Pharmacology

Background:

• Streptococcal pharyngitis, a common bacterial infection in children, requires effective antibiotic treatment.
• Azithromycin and clarithromycin are commonly prescribed antibiotics for this condition.
• Optimizing treatment regimens is crucial for improving patient outcomes and reducing antibiotic resistance.

Purpose of the Study:

• To compare the efficacy and bacteriological eradication rates of azithromycin and clarithromycin in treating streptococcal pharyngitis in children.
• To assess the impact of treatment compliance on eradication rates.

Main Methods:

• A randomized, observer-blind study involving 174 children with confirmed Streptococcus pyogenes infection.
• Participants received either azithromycin (10 mg/kg once daily for 3 days) or clarithromycin (7.5 mg/kg twice daily for 10 days).
• Cure rates were assessed at 10 days, and bacteriological eradication rates were evaluated at days 17-20.

Main Results:

• Both azithromycin and clarithromycin demonstrated high cure rates (95.9% and 96.8%, respectively) at 10 days.
• Bacteriological eradication rates were comparable between groups (94.6% for azithromycin, 95.2% for clarithromycin) when all patients were analyzed.
• However, when including non-completers, azithromycin showed a significantly higher eradication rate (93.6% vs. 82.9%; P < 0.05), attributed to better compliance.

Conclusions:

• Azithromycin and clarithromycin are both effective treatments for pediatric streptococcal pharyngitis.
• Azithromycin's shorter, once-daily regimen may lead to improved compliance and higher overall eradication rates in real-world settings.
• The study highlights the importance of considering compliance when evaluating antibiotic effectiveness in pediatric populations.