A Suspected Hospital Outbreak of Pseudobacteremia Due to Pseudomonas stutzeri

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Abstract
Pseudomonas stutzeri was recovered from blood cultures of 24 patients from 1977 through 1979 at one Mayo Clinic-affilitated hospital. During the investigation it was determined that aqueous green soap — used throughout the hospital to prepare the skin for iv insertions — had probably become contaminated with P. stutzeri. The use of aqueous green soap was discontinued, but eight additional cases of pseudobacteremia occurred in 1980–1981 and one case occurred in 1982. With one exception, all of the patients appeared to have pseudobacteremia rather than true bacteremia; the outbreak ceased only after aqueous green soap was deleted as a standard stock item from the hospital formulary.

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