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Actinobaculum bacteremia: a report of 12 cases

By Eric Gomez, Daniel R. Gustafson, Jon E. Rosenblatt and Robin Patel

Abstract

Actinobaculum species are anaerobic Gram-positive rods that have previously been associated with urinary tract infection (UTI) in the elderly. We report 12 patients with Actinobaculum bacteremia. Only 40 % of blood cultures were clinically considered significant by the treating physicians, but most patients were treated for UTI, suggesting a possible urinary source of bacteremia. Clinicians should be aware of the pathogenic potential of Actinobaculum spp. Actinobaculum is a recently described genus, of which Acti-nobaculum suis is the type species (7). A. suis is a pathogen in swine, being the most common cause of urinary tract infection (UTI) in these animals (15). Three other species, A. schaalii, A. massiliense, and A. urinale, have been associated with human infection. Recent reports have identified A. schaalii as a cause of UTI in the elderly. However, standard methods for urine culture are inadequate for isolation and identification of Acti-nobaculum species in urine, so Actinobaculum UTI may be diagnosed only when accompanied by bacteremia (6, 7, 10). There appears to be little awareness among clinicians regard-ing the pathogenic role of Actinobaculum spp. Therefore, we describe the clinical characteristics of 12 patients from whom Actinobaculum spp. were isolated from blood (Table 1)

Year: 2016
OAI identifier: oai:CiteSeerX.psu:10.1.1.916.6205
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