Peer-reviewed veterinary case report
Antimicrobial resistance in bacterial skin infections in dogs
By Wang, Qian et al.·Published in Pathogens (Basel, Switzerland)·2025·College of Veterinary Medicine, China·View original on PubMed →
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Original publication title: Antimicrobial Resistance and Risk Factors of Canine Bacterial Skin Infections.
- Species:
- dog
Plain-English summary
A study looked at bacterial skin infections in dogs, finding that these infections are often linked to underlying issues like allergies or parasites. The most common type of infection was pyoderma, which affected nearly half of the cases reviewed. Over time, there was a significant increase in resistance to certain antibiotics, making treatment more challenging. To manage these infections effectively, it's important for pet owners to address any underlying health problems and for veterinarians to monitor antibiotic resistance closely.
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Abstract
Bacterial skin infections are common in dogs and often secondary to underlying conditions like allergies or ectoparasite infestations. Untreated primary causes can lead to recurrent infections and an increased risk of antimicrobial resistance, including methicillin-resistant(MRSP), posing a substantial clinical challenge. Here, we analyzed 896 canine bacterial skin infection samples collected from the China Agricultural University Veterinary Teaching Hospital between 2018 and 2022. Species identification was confirmed by MALDI-TOF and 16S rRNA gene sequencing. Of the 896 samples, 722 (80.6%) yielded 1123 bacterial isolates, with(= 421),(= 108), and(= 73) being the most prevalent. Antimicrobial susceptibility was evaluated using the broth microdilution method according to CLSI guidelines. Notably, resistance to florfenicol inincreased from 9.1% in 2018 to 20.0% in 2022, while resistance to ceftriaxone inrose from 30.0% to 72.7% over the same period. Among 305 reviewed cases, pyoderma (47.5%, 145/305) was the most common infection type, predominantly associated with(= 114), followed by otitis (25.6%, 78/305) primarily linked to(= 24). Mixed infections occurred in 35.4% (108/305) of cases, withas the most frequently isolated species in both single and mixed infections. The multivariable logistic regression model revealed that MRSP infections were correlated with a history of invasion (<0.001) and prolonged disease duration (six months to less than one year:= 0.005; one year or longer:< 0.001). Core-genome SNP analysis showed that eight dogs were infected with identicalstrains, in which one dog exhibited a shift from gentamicin susceptibility to resistance within nine days. Conversely, three dogs were infected by distinctstrains at two time points. To effectively manage MRSP infections and chronic skin infections in dogs, rigorous disinfection protocols in veterinary hospitals, control of disease duration, prevention of recurrent infections, and continuous monitoring of antibiotic resistance patterns are essential.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/40333053/