Antimicrobial susceptibility
Antimicrobial susceptibility
| Gram positive | Gram negative | |||||||||||||||||||
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| Cocci | Bacilli | |||||||||||||||||||
| Anaerobes | Enterobacteriacae | |||||||||||||||||||
| MRSA/MRSP | Staphyloccocus spp. | Enteroccocus spp. | Streptoccocus spp. | Clostridium spp. | Bacteroides spp. | Bordetella brochiseptica | Leptospira spp. | Campylobacter spp. | ESBLSa | Escherichia coli | Klebsiella spp. | Enterobacter spp. | Proteus mirabilis | Salmonella spp. | Enterobacteriacae in urine | Pseudomonas spp. | Pasteurella spp. | Acinetobacter baumannii | ||
| Aminoglycosides | Amikacin |
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| Gentamicin |
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| Beta-lactams | Amoxicillin |
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| Ampicillin |
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| Amoxicillin-clavulanate |
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| Cephalosporins | Cefalexin (1st gen.) |
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| Cefotaxime (3rd gen.) |
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| Cefovecin (3rd gen.) |
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| Ceftazidime (3rd gen.) |
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| Ceftiofur (3rd gen.) |
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| Cefuroxime (2nd gen.) |
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| Fluoroquinolones | Enrofloxacin |
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| Marbofloxacin |
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| Pradofloxacin |
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| Lincosamides | Clindamycin |
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| Lincomycin |
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| Macrolides | Azithromycin |
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| Erythromycin |
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| Nitroimidazoles | Metronidazole |
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| Sulphonamides | Trimethoprim sulfamethoxazole |
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| Tetracyclines | Doxycycline |
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| Oxytetracycline |
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This antimicrobial susceptibility chart collates data from the BSAVA Formulary, Sykes (2023), and published Veterinary Committee on Antimicrobial Susceptibility Testing and Clinical and Laboratory Standards Institute breakpoints. It provides an approximate indication of typical susceptibilities. However, whereever possible antimicrobial resistance should be evaluated via culture and susceptibility testing to guide appropriate antimicrobial selection. Each case must be verified using up-to-date literature published by drug manufacturers.
This page is reproduced from the BSAVA Small Animal Formulary copyright BSAVA. Available from: bsavalibrary.com/antimicrobialsusceptibility
a = extended-spectrum beta-lactamases (ESBLs) are normally inhibited by clavulanic acid; however, AmpC producers are resistant to clavulanic acid.
b = E. faecalis, but not E. faecium, has expected resistance to lincosamides
c = S. felis would be expected to be susceptible to these antibiotics
MRSA/MRSP = meticillin-resistant Staphylococcus aureus/pseudintermedius
Susceptible
Caution with interpretation and dosing
Intrinsic resistance
Acquired resistanceClick here to download a PDF of the Antimicrobial susceptibility chart