Reducing inter-operator variation in disc diffusion assays by the inclusion of internal controls in a standard susceptibility test protocol

Aquaculture

Volumn 285, Issue 1-4, 2008, Pages 273-276

  Smith, Pete ^a   Fleming, Gerald T A ^a   Carroll, Cyril ^a  

^a NATIONAL UNIVERSITY OF IRELAND   (Ireland)

Author keywords

Aeromonas salmonicida; Disc diffusion; Florfenicol; Internal control; M42 A; Stokes; Susceptibility testing

Indexed keywords

BACTERIUM; BIOASSAY; CLASSIFICATION; DRUG; PERFORMANCE ASSESSMENT; QUALITY CONTROL; TESTING METHOD;

AEROMONAS SALMONICIDA;

EID: 55949133388     PISSN: 00448486     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.aquaculture.2008.08.022     Document Type: Article

References (20)

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3. CLSI. Methods for Antimicrobial Dilution and Disk Susceptibility Testing of Infrequently Isolated or Fastidious Bacteria; Approved Guideline M45-A (2006), Clinical and Laboratory Standards Institute, Wayne, Pennsylvania
4. CLSI. Methods for Antimicrobial Disk Susceptibility Testing of Bacteria Isolated from Aquatic Animals. Approved Guideline M42-A (2006), Clinical and Laboratory Standards Institute, Wayne, Pennsylvania
5. CLSI. Performance Standards for Antimicrobial Disk Susceptibility Tests; Approved Standard M2-A9 (2006), Clinical and Laboratory Standards Institute, Wayne, Pennsylvania
6. Douglas I., Smith P., and Fleming G.T.A. The effect of NaCl on measures of the antimicrobial agent susceptibility of Aeromonas salmonicida in standard disc diffusion assays. Bull. Eur. Assoc. Fish Pathol. 26 (2006) 232-235
7. Douglas I., Ruane N.M., Geary M., Carroll C., Fleming G.T.A., McMurray J., and Smith P. The advantages of the use of discs containing single agents in disc diffusion testing of the susceptibility of Aeromonas salmonicida to potentiated sulphonamides. Aquaculture 272 (2007) 118-125
8. Gosden P.E., Andrews J.M., Bowker H.A., Holt H.A., MacGowan A.P., Reeves D.S., Sunderland J., and Wise R. Comparison of the modified Stokes' method of susceptibility teting with results obtained using MIC methods and British Society of Antimicrobial Chemotherapy breakpoints. J. Antimicrob. Chemother. 42 (1998) 161-169
9. Joneberg J., Rylander M., Galas M.F., Carlos C., and Kronvall G. Analysis of parameters and validation of method for normalized interpretation of antimicrobial resistance. Int. J. Antimicrob. Agents 21 (2003) 525-535
10. Kronvall G. Determination of the real standard distribution of susceptible strains in zone histograms. Int. J. Antimicrob. Agents 22 (2003) 7-13
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13. NCCLS. Performance Standards for Antimicrobial Disk and Dilution Susceptibility Tests for Bacteria Isolated from Animals; Approved Standard. Second Edition (2002), NCCLS, Wayne, Pennsylvania NCCLS document M31-A2
14. Ruane N.M., Douglas I., Geary M., Carroll C., Fleming G.T.A., and Smith P. Application of normalised resistance interpretation to disc diffusion data on the susceptibility of Aeromonas salmonicida to three quinolone agents. Aquaculture 272 (2007) 156-167
15. Smith P. Accuracy, precision and meaning of antimicrobial agent susceptibility testing of bacteria associated with fish diseases. Aquaculture 196 (2001) 253-266
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17. Smith P. How difficult is it to achieve compliance with the quality control requirements of the Clinical and Laboratory Standards Institute's guideline M42-A?. Aquaculture 275 (2008) 1-4
18. Smith P., and Christofilogiannis P. Application of normalised resistance interpretation to the detection of multiple low level resistance in strains of Vibrio anguillarum obtained from Greek fish farms. Aquaculture 272 (2007) 223-230
19. Smith P., Ruane N.M., Douglas I., Carroll C., Kronvall G., and Fleming G.T.A. Impact of inter-lab variation on the estimation of epidemiological cut-off values for disc diffusion susceptibility test data for Aeromonas salmonicida. Aquaculture 272 (2007) 168-179
20. Stokes J.E., and Ridgeway G.L. Clinical Bacteriology. (Fifth Edition) (1980), Edward Arnold, London 391