Peer-reviewed veterinary case report
How common is MRSP in dogs after skin infection treatment
By Beck, Karri M et al.·Published in Veterinary dermatology·2012·Veterinary Emergency Clinic and Referral Centre, Canada·View original on PubMed →
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Original publication title: Prevalence of meticillin-resistant Staphylococcus pseudintermedius (MRSP) from skin and carriage sites of dogs after treatment of their meticillin-resistant or meticillin-sensitive staphylococcal pyoderma.
- Species:
- dog
Plain-English summary
A group of 173 dogs with skin infections called pyoderma were tested for a type of bacteria known as meticillin-resistant Staphylococcus pseudintermedius (MRSP) before and after treatment. Initially, about 40% of these dogs had MRSP on their skin, and after treatment, nearly half of those with MRSP still had it present on their skin or in other areas like the nose and rectum. Even dogs that didn't have MRSP at first showed an increase in MRSP after treatment. This suggests that MRSP can stick around even after the skin infection seems to be gone, and dogs can pick it up during treatment.
People also search for: dog skin infection MRSP · dog pyoderma treatment · why does my dog have bacteria on skin
Abstract
BACKGROUND: Meticillin-resistant staphylococci are significant pathogens in veterinary dermatology, yet longitudinal studies of the impact of routine antimicrobial therapy on emergence or resolution of resistance are lacking. OBJECTIVES: To determine the prevalence of meticillin-resistant staphylococci on skin and carriage sites in dogs with bacterial pyoderma and evaluate the prevalence of meticillin-resistant Staphylococcus pseudintermedius (MRSP) colonization after successful treatment of pyoderma. ANIMALS: One hundred and seventy-three dogs that presented to a dermatology referral service with pyoderma and 41 healthy control dogs. METHODS: Skin, nasal and rectal swabs for bacterial culture were collected at the time of referral and after clinical resolution of the pyoderma. Meticillin resistance was confirmed by demonstration of penicillin binding protein 2a antigen. RESULTS: Initially, skin cultures yielded MRSP in 70 (40.5%) dogs, meticillin-resistant Staphylococcus aureus (MRSA) in three (1.7%) and meticillin-resistant Staphylococcus schleiferi ssp. coagulans (MRSScoag) in five (2.9%). Samples collected from the nose and rectum (carriage sites) yielded MRSP in 59 (34.1%) dogs, MRSA in 11 (6.4%) and MRSScoag in seven (4.0%). One hundred and two dogs were available for follow-up cultures after clinical cure. Of 42 dogs initially diagnosed with MRSP pyoderma, MRSP was isolated at follow-up from skin in 19 (45.2%) and carriage sites in 20 (47.6%). Of 60 dogs that did not have MRSP pyoderma initially, MRSP was isolated post-treatment from the skin in 17 (28.3%), and MRSP from carriage sites increased from 7.8% (initially) to 26.7% (P = 0.0022). CONCLUSIONS AND CLINICAL IMPORTANCE: Colonization by MRSP often persists after resolution of MRSP pyoderma. Acquisition of MRSP during treatment appears to be common.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/22364707/