The percentage of polybacterial infection was higher in patients who did not taken any antibiotics (47.8%) than those who had received some antibiotherapy before pus sampling (16.7%) (p<0.05).
Tỉ lệ đa khuẩn ở nhóm bệnh nhân chưa dùng kháng sinh (47,8%) cao hơn nhóm đã dùng kháng sinh (16,7%) (p < 0,05).