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Chapter 11 : The Genus Enterobacter

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Abstract:

The genus was first proposed by researchers in 1960 to resolve taxonomic inconsistencies in strains formerly assigned to the genus . With the advent of DNA-DNA hybridization as a standard tool in taxonomic studies, a more precise species definition for the genus unfolded. Several of these species have been isolated from trees, including , , and . Although most of the less frequently encountered species have been associated with blood infections, very little information is currently available regarding the epidemiology and clinical significance of such isolations. Epidemiologic investigations identified three environmental strains, two from handprints of health care workers and one from a multidose in-use dextrose vial that matched the human isolates in antimicrobial susceptibility profiles; they were very similar upon pulsed-field gel electrophoresis (PFGE) analysis. During the past decade, there has been a relative explosion in laboratory techniques useful in the molecular fingerprinting of isolates. These tests include but are not limited to plasmid analysis, PFGE, random amplified polymorphic DNA (RAPD), ribotyping, enterobacterial repetitive intergenic consensus (ERIC) PCR, and amplified fragment length polymorphism. Only recently have studies looked at potential virulence factors associated with members of the genus , and our knowledge concerning pathogenicity determinants in enterobacteria is still in its infancy. Two additional species have recently been described, bringing the number of validly published species in the genus to 18, including .

Citation: Janda J, Abbott S. 2006. The Genus Enterobacter, p 151-180. In The Enterobacteria, Second Edition. ASM Press, Washington, DC. doi: 10.1128/9781555817541.ch11

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References

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Tables

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Table 1

Current composition of the genus

Citation: Janda J, Abbott S. 2006. The Genus Enterobacter, p 151-180. In The Enterobacteria, Second Edition. ASM Press, Washington, DC. doi: 10.1128/9781555817541.ch11
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Table 2

. Genetic heterogeneity of

Citation: Janda J, Abbott S. 2006. The Genus Enterobacter, p 151-180. In The Enterobacteria, Second Edition. ASM Press, Washington, DC. doi: 10.1128/9781555817541.ch11
Generic image for table
Table 3

. Clinical and environmental distribution of species

Citation: Janda J, Abbott S. 2006. The Genus Enterobacter, p 151-180. In The Enterobacteria, Second Edition. ASM Press, Washington, DC. doi: 10.1128/9781555817541.ch11
Generic image for table
Table 4

. Selected outbreaks, 1998 to 2004

Citation: Janda J, Abbott S. 2006. The Genus Enterobacter, p 151-180. In The Enterobacteria, Second Edition. ASM Press, Washington, DC. doi: 10.1128/9781555817541.ch11
Generic image for table
Table 5

. Clinical presentation of meningitis in children and adults

Citation: Janda J, Abbott S. 2006. The Genus Enterobacter, p 151-180. In The Enterobacteria, Second Edition. ASM Press, Washington, DC. doi: 10.1128/9781555817541.ch11
Generic image for table
Table 6

Identification of species by commercial systems

Citation: Janda J, Abbott S. 2006. The Genus Enterobacter, p 151-180. In The Enterobacteria, Second Edition. ASM Press, Washington, DC. doi: 10.1128/9781555817541.ch11
Generic image for table
Table 10

Susceptibility of major species to select antimicrobial agents

Citation: Janda J, Abbott S. 2006. The Genus Enterobacter, p 151-180. In The Enterobacteria, Second Edition. ASM Press, Washington, DC. doi: 10.1128/9781555817541.ch11
Generic image for table
Table 7

Selected epidemiologic investigations employing different techniques to type strains

Citation: Janda J, Abbott S. 2006. The Genus Enterobacter, p 151-180. In The Enterobacteria, Second Edition. ASM Press, Washington, DC. doi: 10.1128/9781555817541.ch11
Generic image for table
Table 8

Potential virulence factors associated with species

Citation: Janda J, Abbott S. 2006. The Genus Enterobacter, p 151-180. In The Enterobacteria, Second Edition. ASM Press, Washington, DC. doi: 10.1128/9781555817541.ch11
Generic image for table
Table 9

General susceptibility profile of members of the genus

Citation: Janda J, Abbott S. 2006. The Genus Enterobacter, p 151-180. In The Enterobacteria, Second Edition. ASM Press, Washington, DC. doi: 10.1128/9781555817541.ch11

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