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Preliminary evaluation of sensititre system for identifying gram-negative bacilli.

Authors
Type
Published Article
Journal
Microbiologica
Publication Date
Volume
14
Issue
3
Pages
261–265
Identifiers
PMID: 1921747
Source
Medline

Abstract

The automated microdilution Sensititre System (Sensititre, LtD.) was evaluated for the identification of 120 clinically isolated fermenter and non-fermenter Gram negative bacilli and of 12 ATCC reference strains (American Type Culture Collection). Daily and overnight (5 and 18 hours) identifications were performed according to the manufacturer. In both cases, the results were compared with those obtained with the overnight API 20E (API System, La Balme les Grottes, Montalieu Vercieu) used as reference method. Concordance between the results obtained after 5 hrs of incubation and those obtained with API 20E was found in 65% of cases (acceptable identification criteria with probability over 80%). When results were determined after 18 hrs of incubation (identification criteria with probably over 80%) concordance was found in 82.5%. Reproducibility obtained by repeated (10 times) identification with four different strains was 100% both at 5 hrs and 18 hrs. Identification accuracy of the 12 ATCC strains was 8/12 (66.6%) after 5 hrs and 12/12 (100%) after 18 hrs.

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