AMP: ampicillin; CHL: chloramphenicol; CIP: ciprofloxacin; ERY: erythromycin; GEN: gentamicin; PEN: penicillin; TET: tetracycline; VAN: vancomycin. The numbers next to the antibiotics indicate μg per disk, or units per disk for penicillin. S (susceptible), I (intermediate), R (resistant); the numbers in brackets indicate the inhibition zone size (mm) as the mean of two independent measurements for each strain versus each antibiotic disk; SD values (n = 2) for the AR zones of each strain singly are not shown for table simplification.
The authors wish to thank Vasiliki Zafeiropoulou and Maria Mavropoulou, Veterinary Laboratory, Food Hygiene Department, Ministry of Agriculture, Athens, Greece, for identifying the API 20 STREP code numbers of the present Streptococcus isolates with the apiwebTM software, not available in our laboratory.
Author contributions
JS: Conceptualization, Formal analysis, Methodology, Validation, Resources, Data curation, Project administration, Writing—original draft, Writing—review & editing, Investigation, Visualization. AK: Formal analysis, Validation, Writing—review & editing. Both authors read and approved the submitted version.
Conflicts of interest
The authors declare that they have no conflicts of interest.
Ethical approval
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