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Failure of Neisseria gonorrhoeae to grow in the ATB NH susceptibility test system
Author(s) -
H Young,
A Moyes,
C. Hardie
Publication year - 1997
Publication title -
journal of antimicrobial chemotherapy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.124
H-Index - 194
eISSN - 1460-2091
pISSN - 0305-7453
DOI - 10.1093/jac/40.4.579
Subject(s) - neisseria gonorrhoeae , microbiology and biotechnology , neisseria meningitidis , haemophilus influenzae , serotype , neisseria , biology , antibiotics , neisseriaceae , medicine , bacteria , genetics
The ATB NH system designed for antibiotic susceptibility testing of Neisseria gonorrhoeae, Neisseria meningitidis and Haemophilus influenzae was evaluated using 94 clinical isolates of gonococci representing a wide variety of serovar/auxotype strains. Using the manufacturer's automated system 55% of the clinical isolates failed to grow, compared with a 33% failure rate for manual processing and visual reading. Growth failure was significantly higher with 1A isolates (73% automated and 69% manual) than with 1B isolates (49% automated and 25% manual). The higher failure rate of 1A isolates correlated with multiple auxotrophy. The inability of the ATB NH system to support the growth of common serovar/auxotypes makes the ATB NH system unsuitable for antibiotic susceptibility testing of N. gonorrhoeae.

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