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June 1986

Aeromonas-Related Diarrhea-Reply

Author Affiliations

Los Angeles

Arch Intern Med. 1986;146(6):1237-1241. doi:10.1001/archinte.1986.00360180257058

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—We agree with the statement by Hall and Andrews that "the literature on Aeromonas-related diarrhea in adults is still anemic," and appreciate that these organisms are not sought or are not reported by many laboratories when detected in small numbers. The use of an alkaline peptone enrichment broth, in addition to direct-plating methods will, without doubt, increase the detection of Aeromonas in feces.

We would still urge caution in interpretation of a fecal culture that yields Aeromonas. The genus Aeromonas is not homogeneous; it contains at least three species that possess rather different biological characteristics. The available data do not permit conclusions as to which species or types of Aeromonas are enteropathogenic for humans. Moreover, Aeromonas species are widely distributed in nature and may be accidentally ingested by humans. The mere recovery of an organism from feces, particularly if it is present only in small numbers, does

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