Abstract:
BACKGROUND:Acinetobacter species are associated with increasing mortality due to emerging drug-resistance. Pediatric Acinetobacter infections are largely undefined in developed countries and clinical laboratory identification methods do not reliably differentiate between members of the Acinetobacter calcoaceticus-baumannii complex, leading to improper identification. Therefore we aimed to determine risk factors for invasive Acinetobacter infections within an academic, pediatric setting as well as defining microbiologic characteristics of predominant strains. METHODS:Twenty-four invasive Acinetobacter isolates were collected from 2009-2013. Comparative sequence analysis of the rpoB gene was performed coupled with phenotypic characterization of antibiotic resistance, motility, biofilm production and clinical correlation. RESULTS:Affected patients had a median age of 3.5 years, and 71 % had a central catheter infection source. rpoB gene sequencing revealed a predominance of A. pittii (45.8 %) and A. baumannii (33.3 %) strains. There was increasing incidence of A. pittii over the study. Two fatalities occurred in the A. pittii group. Seventeen percent of isolates were multi-drug resistant. A pittii and A. baumannii strains were similar in motility, but A pittii strains had significantly more biofilm production (P value = 0.018). CONCLUSIONS:A. pittii was the most isolated species highlighting the need for proper species identification. The isolated strains had limited acute mortality in children, but the occurrence of more multi-drug resistant strains in the future is a distinct possibility, justifying continued research and accurate species identification.
journal_name
BMC Infect Disjournal_title
BMC infectious diseasesauthors
Jain AL,Harding CM,Assani K,Shrestha CL,Haga M,Leber A,Munson RS Jr,Kopp BTdoi
10.1186/s12879-016-1678-9subject
Has Abstractpub_date
2016-07-22 00:00:00pages
346issn
1471-2334pii
10.1186/s12879-016-1678-9journal_volume
16pub_type
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pub_type: 杂志文章,meta分析
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pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
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pub_type: 临床试验,杂志文章,多中心研究
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