Pediatric Ear Culture Antibiogram for British Columbia Communities: A Retrospective Analysis of Outpatient Data (2020–2024)

Background: Localized susceptibility data supports development of a pediatric-specific antibiogram to guide empiric therapy for ear infections within the British Columbia community setting. The aim of the current student was to construct an antibiogram from community-collected ear culture isolates to support antibiotic selection for ear infections in communities. Methods: Data were collected from patients 90%) against MSSA, GAS, and S. pneumoniae, while clindamycin and erythromycin showed significantly lower sensitivity against both MSSA (84% and 82%, respectively) and MRSA (79% and 50%, respectively) (p < 0.001). Trimethoprim–sulfamethoxazole and tetracycline demonstrated 99% and 97% susceptibility for MSSA, respectively, and 94% and 85% for MRSA, respectively. Conclusions: Beta-lactam antibiotics remain suitable for treatment against the pathogens S. pneumoniae, GAS, and MSSA, while trimethoprim–sulfamethoxazole is more suitable for MRSA.