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Performance of MALDI-TOF Mass Spectrometry (VITEK MS) in the Identification of Salmonella Species

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Author(s)
Gyu Ri KimSi Hyun KimEun-Young KimEun Hee ParkIn Yeong HwangSeok Hoon JeongHyun Soo KimYoung Ah KimYoung UhKyeong Seob ShinYoung Ree KimNamhee RyooJong Hee ShinJeong Hwan Shin
Keimyung Author(s)
Ryoo, Nam Hee
Department
Dept. of Laboratory Medicine (진단검사의학)
Journal Title
Microorganisms
Issued Date
2022
Volume
10
Issue
10
Keyword
MALDI-TOF MSSalmonella speciesVITEK MSmass spectrometry
Abstract
Salmonella is a major pathogen causing foodborne infections in humans. Salmonella isolates are identified using biochemical and serological tests, including automated systems such as the VITEK2 system. However, there are few reports on Salmonella identification using VITEK MS. Therefore, we aimed to evaluate the usefulness of MALDI-TOF VITEK MS for Salmonella identification. A total of 1389 Salmonella isolates were identified using VITEK MS ver3.0 or ver3.2. All Salmonella isolates were confirmed by serotyping using the Kauffmann-White scheme, and the results were compared with the VITEK MS results. A total of 1389 Salmonella isolates, including 66 serotypes, were correctly identified at the genus level by VITEK MS. However, these systems failed to correctly identify typhoidal Salmonella. Among the five Salmonella enterica ssp. diarizonae isolates, only one was correctly identified, whereas one and three isolates were partially identified and misidentified, respectively. On the other hand, the VITEK2 system successfully identified all typhoidal Salmonella (Typhi and Paratyphi A) and Salmonella enterica ssp. diarizonae isolates. VITEK MS was useful for identifying Salmonella species isolated from clinical specimens; however, additional biochemical tests, such as the VITEK2 System, should be considered to accurately identify Salmonella ser. Typhi, and Salmonella ser. Paratyphi A.
Keimyung Author(s)(Kor)
류남희
Publisher
School of Medicine (의과대학)
Type
Article
ISSN
2076-2607
Source
https://www.mdpi.com/2076-2607/10/10/1974
DOI
10.3390/microorganisms10101974
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/44569
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Laboratory Medicine (진단검사의학)
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