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Article
August 1957

Infections Due to Bacterium Anitratum

Author Affiliations

New Haven, Conn.

From the Department of Medicine, Yale University. Kellogg Foundation Fellow in Medicine (Dr. Rocha); Research Fellow of the American Heart Association (Dr. Guze).

AMA Arch Intern Med. 1957;100(2):272-275. doi:10.1001/archinte.1957.00260080098019
Abstract

Introduction  Bacterium anitratum is a Gram-negative bacillus having many characteristics of the Enterobacteriaceae but differing in its inability to reduce nitrate. In many laboratories it is still reported as an unidentified Gram-negative bacillus, and its doubtful position in bacteriologic nomenclature has also received some attention, with varying opinions.1-3 Since the original descriptions by Schaub and Hauber 4 and Stuart et al.,5 several papers have described its isolation, cultural and biochemical characteristics, and sensitivities to antibiotics.6-8 Little information has been provided in connection with its pathogenicity for man. The purpose of this paper is to report three cases in which B. anitratum appeared to play a significant pathogenic role.

Bacteriologic Methods 

A. Identification of Bacterium Anitratum.  —The organism is a nonmotile Gram-negative bacillus, with marked bipolar staining. It grows well on desoxycholate agar, with no, or very slow, lactose fermentation and is inhibited on SS (Difco) agar. In

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