Investigation of the occurrence and antimicrobial resistance of Escherichia coli, Staphylococcus spp., and Streptococcus spp. in dogs with urinary tract infections at veterinary clinics in Thu Duc city
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Abstract
This study investigated the occurrence and antimicrobial resistance of Staphylococcus spp. in dogs with urinary tract infections (UTI) at five veterinary clinics in Thu Duc City from May 2024 to September 2025. Of 45 urine samples from dogs showing urinary tract infection symptoms, 22 (48.89%) were positive for Staphylococcus spp.; E. coli spp. and Streptococcus spp. were not detected. Positivity rates were significantly higher in males (61.54%, p = 0.045), dogs >5 years old (72.73%, p = 0.006), and free-roaming dogs (77.78%, p = 0.033). Urinalysis of positive samples revealed leukocytes in 100%, alkaline pH in 86.36%, increased specific gravity with hematuria in 68.18%, and proteinuria in 59.09%. Antimicrobial susceptibility testing on 22 isolates showed high resistance to enrofloxacin (77.27%), erythromycin (72.73%), ampicillin (63.64%), and norfloxacin (59.09%), while maintaining high susceptibility (>80%) to gentamicin, amoxicillin/clavulanic acid, and nitrofurantoin. Results underscore the importance of susceptibility testing in canine urinary tract infection management to curb antimicrobial resistance.
Tóm tắt
Nghiên cứu được thực hiện nhằm khảo sát sự hiện diện và đề kháng kháng sinh của Staphylococcus spp. trong nhiễm trùng đường tiết niệu (UTI) ở chó tại 5 phòng khám thành phố Thủ Đức (05/2024–09/2025). Trên 45 mẫu nước tiểu từ chó có triệu chứng UTI, 22 mẫu (48,89%) dương tính với Staphylococcus spp.; không phát hiện E. coli spp. và Streptococcus spp. Tỷ lệ dương tính cao hơn đáng kể ở chó đực (61,54%, p = 0,045), chó >5 tuổi (72,73%, p = 0,006) và chó nuôi thả hoàn toàn (77,78%, p = 0,033). Kết quả xét nghiệm nước tiểu cho thấy 100% có bạch cầu, 86,36% pH kiềm, 68,18% tăng tỷ trọng và có máu, 59,09% protein niệu. Việc kháng sinh đồ trên 22 chủng cho thấy đề kháng cao với Enrofloxacin (77,27%), Erythromycin (72,73%), Ampicillin (63,64%), Norfloxacin (59,09%); nhạy cảm cao (>80%) với Gentamicin, Amoxicillin/clavulanic acid và Nitrofurantoin. Kết quả nhấn mạnh tầm quan trọng của kháng sinh đồ trong quản lý UTI ở chó để hạn chế kháng thuốc.
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