The antimicrobial susceptibility of Staphylococcus species isolated from canine dermatitis |
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| Authors: | H Kruse M Hofshagen S I Thoresen W P Bredal I Vollset N E Søli |
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| Institution: | (1) Department of Pharmacology, Microbiology and Food Hygiene, Norwegian College of Veterinary Medicine, PO Box 8146 Dep., N-0033 Oslo, Norway;(2) Department of Bacteriology and Feed Hygiene, Central Veterinary Laboratory, PO Box 8156 Dep., N-0033 Oslo, Norway;(3) Norwegian Veterinary Laboratory, PO Box 1868 Gulset, N-3701 Skien, Norway;(4) Department of Small Animal Medicine, Norwegian College of Veterinary Medicine, PO Box 8146 Dep., N-0033 Oslo, Norway |
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| Abstract: | In a retrospective study, 1538 strains of  -haemolysin-producing Staphylococcus species isolated from dermatitis in dogs at three veterinary clinical microbiology laboratories in Norway during 1986–87 and 1993–94 were investigated for their antimicrobial susceptibility. None of the strains was resistant to cloxacillin, cephalexin or the quinolones enrofloxacin and ciprofloxacin. More than 96% of the strains were susceptible to trimethoprim-sulphonamide, bacitracin and fucidic acid. Between 67% and 89% of the strains were susceptible to erythromycin, lincosamides, tetracycline, neomycin and chloramphenicol. Only 37.9% of the strains were susceptible to penicillin. The frequency of penicillin resistance increased significantly between the first and second periods, from 46.0% to 58.6%. The frequency of resistance to lincomycin, clindamycin and erythromycin also increased significantly between the first and second periods, from 3.0%, 2.1% and 3.3% to 25.5%, 19.5% and 24.8%, respectively. A moderate increase in resistance to tetracycline was also noted, from 20.4% in the first to 27.6% in the second period. On the other hand, the frequency of resistance to trimethoprim-sulphonamide decreased significantly from 4.1% in the first to 0.9% in the second period. Many different resistance patterns were observed in each period. However, the proportion of multiresistant strains increased from 2.1% in the first to 10.2% in the second period. There was a decrease in resistance to the combination of trimethoprim-sulphonamide and penicillin from the first to the second period. Resistance to the combination of lincosamides and pencillin increased. For the combinations penicillin-tetracycline-lincosamides, pencillin-lincosamides-erythromycin, and pencillin-tetracycline-lincosamides-erythromycin, there was a striking increase in resistance between the first and the second periods.Abbreviations CVL
Central Veterinary Laboratory
- NCVM
Norwegian College of Veterinary Medicine
- NVL
Norwegian Veterinary Laboratory |
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| Keywords: | antibiotic dermatitis dogs drug resistance Staphylococcus |
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