Different antibiotic treatments for group A streptococcal pharyngitis

Area of Science:

• Infectious Diseases
• Pharmacology
• Evidence-Based Medicine

Background:

• Antibiotics offer limited benefit for sore throats, with increased efficacy for Group A beta-haemolytic streptococci (GABHS) infections.
• Optimal antibiotic choice for GABHS tonsillopharyngitis is not well-established.

Purpose of the Study:

• Compare the efficacy of different antibiotics for GABHS tonsillopharyngitis.
• Evaluate symptom relief, illness duration, relapse rates, and complication prevention.
• Assess adverse effects and the overall risk-benefit of antibiotic treatment.

Main Methods:

• Systematic review of randomized, double-blind trials.
• Searched multiple databases (CENTRAL, MEDLINE, Embase, Web of Science) and clinical trial registers.
• Assessed risk of bias and quality of evidence using Cochrane methods and GRADE tool.

Main Results:

• Low to very low quality evidence for most outcomes.
• Cephalosporins showed a trend towards better symptom resolution and lower relapse rates than penicillin, but not always statistically significant.
• No significant differences were found between macrolides and penicillin.
• Carbacephem showed improved symptom resolution in children compared to penicillin.
• Limited data on long-term complications; azithromycin in children had more adverse events than amoxicillin.

Conclusions:

• No clinically significant differences in symptom resolution between cephalosporins, macrolides, and penicillin for GABHS tonsillopharyngitis.
• Penicillin remains a cost-effective first-choice treatment due to low resistance.
• Further research is needed in low-income countries with higher complication risks.