Ninety-two strains of Yersinia pestis recovered over a 21-year period were evaluated for susceptibility to traditional and newer antimicrobial agents. In vitro resistance was noted only against rifampin and imipenem (ϳ20% of strains). The most active compounds (MIC at which 90% of the isolates tested are inhibited) against Y. pestis were cefixime, ceftriaxone, trimethoprim-sulfamethoxazole, and trovafloxacin.
This report describes the isolation of Moellerella wisconsensis from the oral secretions of a wild raccoon in Northern California. Human enteric disease has previously been associated with this organism. This represents the first isolation of this rare enterobacterial species from a non-captive animal and only the third from a non-human source.
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