Antimicrobial Susceptibility of Campylobacter

The in vitro susceptibility of all confirmed Campylobacter strains was determined by using the disc diffusion method on Mueller–Hinton agar (Oxoid, UK) according to the guidelines of the Clinical and Laboratory Standards Institute (CLSI) [47 ]. Antimicrobial agent selection was based on the importance for both human and veterinary fields in addition to their antimicrobial mechanisms. Nine antibiotics belonging to five classes were selected. They included penicillin (AX; 20 μg and AM; 10 μg), macrolides (E; 15 μg), aminoglycosides (S; 10 μg and AK; 30 μg), tetracyclines (TE; 30 μg and DO; 30 μg), fluoroquinolones (NOR; 10 µg and CIP; 5 μg). All antimicrobial agents used in this study were purchased from Oxoid (England). C. jejuni ATCC 33,560 and C. coli ATCC 33,559 were used as control strains. MDR strains of Campylobacter are those that are resistant to three or more different classes of antimicrobials. Additionally, MARI for all Campylobacter isolates was calculated using the formula a/b (where "a" represents the number of antimicrobials to which an isolate was resistant and "b" represents the overall number of antimicrobials to which the isolate was exposed) [48 ].

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Tawakol M.M., Nabil N.M., Samir A., M. H.H., Yonis A.E., Shahein M.A, & Elsayed M.M. (2023). The potential role of migratory birds in the transmission of pathogenic Campylobacter species to broiler chickens in broiler poultry farms and live bird markets. BMC Microbiology, 23, 66.

Publication 2023

Mueller–Hinton agar

Agar Aminoglycosides Antibiotics Antimicrobials Campylobacter Clinical laboratory Diffusion Fluoroquinolones Human Macrolides Penicillin Strains Susceptibility Tetracyclines

Corresponding Organization : Mansoura University

Other organizations : Agricultural Research Center

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Variable analysis

independent variables

Antimicrobial agent selection

dependent variables

In vitro susceptibility of all confirmed Campylobacter strains

control variables

Mueller–Hinton agar (Oxoid, UK)
Guidelines of the Clinical and Laboratory Standards Institute (CLSI)
C. jejuni ATCC 33,560 and C. coli ATCC 33,559 as control strains

controls

C. jejuni ATCC 33,560 and C. coli ATCC 33,559 as positive and negative control strains

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