Antimicrobial Resistance and Bacterial Pharyngitis in Pediatric Patients, NW Ethiopia

Overview

This study assessed the prevalence, bacterial etiology, antimicrobial resistance patterns, and risk factors of bacterial pharyngitis among children in specialized hospitals in Northwest Ethiopia. It identified key bacterial pathogens and highlighted significant antimicrobial resistance, emphasizing the need for targeted antibiotic stewardship.

Background

Pharyngitis is a common upper respiratory tract infection in children, often caused by Streptococcus pyogenes and other bacterial agents. Untreated bacterial pharyngitis can lead to serious complications such as rheumatic heart disease and glomerulonephritis. The emergence of antimicrobial resistance, driven by irrational antibiotic use and limited diagnostic resources, poses a growing challenge in resource-limited settings like Ethiopia. Understanding local bacterial profiles and resistance patterns is critical for effective management.

Data Highlights

The study was conducted from June to August 2024 at two tertiary hospitals in Northwest Ethiopia, enrolling 254 pediatric patients aged ≤14 years with clinical pharyngitis. Data collected included socio-demographic, clinical, and environmental factors. Throat swabs were cultured to identify bacterial pathogens and assess antimicrobial susceptibility. The sample size was calculated based on a prior prevalence estimate of 21.3% bacterial pharyngitis.

Key Findings

• Streptococcus pyogenes was the predominant bacterial pathogen isolated from pediatric pharyngitis cases.
• Other significant bacterial agents included Moraxella catarrhalis, Haemophilus influenzae, Staphylococcus aureus, and Streptococcus pneumoniae.
• High rates of antimicrobial resistance were observed, linked to irrational antibiotic use and self-medication practices.
• Risk factors for bacterial pharyngitis included young age, exposure to wood smoke, overcrowding, school attendance, and contact with coughing individuals.
• Limited diagnostic infrastructure and restricted access to microbiological testing contributed to inappropriate antibiotic use and resistance development.

Clinical Implications

Clinicians should consider local bacterial prevalence and resistance patterns when selecting empiric antibiotics for pediatric pharyngitis in Northwest Ethiopia. Emphasis on rational antibiotic prescribing, improved diagnostic capacity, and addressing environmental risk factors such as indoor smoke exposure and overcrowding can help reduce disease burden and antimicrobial resistance. Patient and caregiver education on antibiotic use is also essential.

Conclusion

This study highlights the significant burden of bacterial pharyngitis and antimicrobial resistance among children in Northwest Ethiopia. Tailored interventions focusing on accurate diagnosis, antibiotic stewardship, and risk factor mitigation are critical to improving outcomes.

References

1. Various Authors/Source/2024 -- Antimicrobial Resistance and Contributing Factors of Bacterial Pharyngitis in Pediatric Patients at Specialized Hospitals in Northwest Ethiopia