Performance of Five Commercial Identification Platforms for Identification of Staphylococcus delphini. Academic Article uri icon

Overview

abstract

  • The Staphylococcus intermedius group (SIG) is a collection of coagulase-positive staphylococci consisting of four distinct species, namely, Staphylococcus cornubiensis, Staphylococcus delphini, Staphylococcus intermedius, and Staphylococcus pseudintermedius SIG members are animal pathogens and rare causes of human infection. Accurate identification of S. pseudintermedius has important implications for interpretation of antimicrobial susceptibility testing data and may be important for other members of the group. Therefore, we sought to evaluate the performance of five commercially available identification platforms with 21 S. delphini isolates obtained from a variety of animal and geographic sources. Here, we show that automated biochemical platforms were unable to identify S. delphini to the species level, a function of its omission from their databases, but could identify isolates to the SIG level with various degrees of success. However, all automated systems misidentified at least one isolate as Staphylococcus aureus One matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) system was able to identify S. delphini to the species level, suggesting that MALDI-TOF MS is the best option for distinguishing members of the SIG. With the exception of S. pseudintermedius, it is unclear if other SIG members should be routinely identified to the species level; however, as our understanding of their role in animal and human diseases increases, it may be necessary and important to do so.

publication date

  • October 23, 2019

Research

keywords

  • Automation, Laboratory
  • Staphylococcal Infections
  • Staphylococcus

Identity

PubMed Central ID

  • PMC6813025

Scopus Document Identifier

  • 85074118069

Digital Object Identifier (DOI)

  • 10.1186/s13028-017-0328-6

PubMed ID

  • 31413084

Additional Document Info

volume

  • 57

issue

  • 11