Stutzer and Kwaschnina 1929 was originally meagerly described. No type strain was designated, and the species does not appear to have been referred to in the literature since it was first described. We have examined a reference strain (ATCC 4651 = NCTC 11036) of this species, one of Stutzer's strains, which we propose as the neotype strain. Of 1,500 gram-negative, non-fermentative isolates submitted to the National Collection of Type Cultures for computer-assisted identification over the last 10 years, nine conformed in their characters to the proposed neotype strain of . We have examined these strains in a large number of biochemical tests and in susceptibility to a range of antimicrobial agents in order to give a revised description of the organism by which it may be more easily recognized in clinical material. All 10 isolates of were resistant to gentamicin and carbenicillin as well as to several other antimicrobial agents generally useful in the treatment of infections caused by gram-negative, non-fermentative organisms, and this suggests that infections due to this organism might prove difficult to treat.


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