Research Article
Comparison of Autof ms1000 and Bruker Biotyper MALDI-TOF MS Platforms for Routine Identification of Clinical Microorganisms
Table 2
Comparison of identification performance in preserved strains.
| | Species | | Autof ms1000 | Bruker Biotyper | | ID species | ID genus | No ID | MisID species | ID species | ID genus | No ID | MisID species |
| | Enterobacterales (%) | 59 | 58 (98.3) | 0 (0.0) | 0 (0.0) | 1 (1.7) | 58 (98.3) | 0 (0.0) | 0 (0.0) | 1 (1.7) | | Citrobacter freundii complex | 6 | 6 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | | Enterobacter aerogenes | 3 | 3 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | | Enterobacter cloacae complex | 8 | 8 | 0 | 0 | 0 | 8 | 0 | 0 | 0 | | Escherichia coli | 9 | 9 | 0 | 0 | 0 | 9 | 0 | 0 | 0 | | Hafnia alvei | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Klebsiella oxytoca | 3 | 3 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | | Klebsiella pneumoniae complex | 9 | 9 | 0 | 0 | 0 | 9 | 0 | 0 | 0 | | Morganella morganii | 3 | 3 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | | Pantoea agglomerans | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Proteus mirabilis | 5 | 5 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | | Proteus vulgaris | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | | Providencia rettgeri | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Providencia stuartii | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Salmonella species | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | | Serratia liquefaciens | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Serratia marcescens | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | | Serratia nematodiphila | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | | Yersinia enterocolitica | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Nonfermenters (%) | 26 | 25 (96.2) | 0 (0.0) | 0 (0.0) | 1 (3.8) | 26 (100.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | | Achromobacter xylosoxidans | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | | Acinetobacter baumannii complex | 6 | 6 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | | Acinetobacter bereziniae | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | | Burkholderia cepacia complex | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | | Moraxella catarrhalis | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | | Pseudomonas aeruginosa | 8 | 8 | 0 | 0 | 0 | 8 | 0 | 0 | 0 | | Pseudomonas stutzeri | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Stenotrophomonas maltophilia | 4 | 4 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | | Other Gram-negative rods (%) | 6 | 6 (100.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 6 (100.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | | Campylobacter jejuni | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Haemophilus influenzae | 3 | 3 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | | Haemophilus parainfluenzae | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Neisseria gonorrhoeae | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Gram-positive cocci (%) | 77 | 77 (100.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 75 (97.4) | 2 (2.6) | 0 (0.0) | 0 (0.0) | | Aerococcus viridans | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Enterococcus avium | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Enterococcus casseliflavus | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | | Enterococcus faecalis | 8 | 8 | 0 | 0 | 0 | 8 | 0 | 0 | 0 | | Enterococcus faecium | 9 | 9 | 0 | 0 | 0 | 9 | 0 | 0 | 0 | | Enterococcus raffinosus | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Micrococcus luteus | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Parvimonas micra | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Rothia mucilaginosa | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Staphylococcus aureus | 10 | 10 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | | Staphylococcus capitis | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | | Staphylococcus epidermidis | 9 | 9 | 0 | 0 | 0 | 9 | 0 | 0 | 0 | | Staphylococcus haemolyticus | 3 | 3 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | | Staphylococcus hominis | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Staphylococcus lugdunensis | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Staphylococcus pasteuri | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Staphylococcus saprophyticus | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | | Streptococcus agalactiae | 6 | 6 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | | Streptococcus anginosus | 3 | 3 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | | Streptococcus constellatus | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | | Streptococcus dysgalactiae | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Streptococcus gallolyticus | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Streptococcus intermedius | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Streptococcus oralis | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Streptococcus parasanguinis | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | | Streptococcus pneumoniae | 2 | 2 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | | Streptococcus pyogenes | 3 | 3 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | | Streptococcus salivarius | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | | Gram-positive rods (%) | 3 | 3 (100.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 3 (100.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | | Corynebacterium striatum | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | | Listeria monocytogenes | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Anaerobes (%) | 12 | 11 (91.7) | 1 (8.3) | 0 (0.0) | 0 (0.0) | 12 (100.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | | Bacteroides fragilis | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | | Bacteroides ovatus | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Bacteroides thetaiotaomicron | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Clostridioides difficile | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Clostridium perfringens | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Eggerthella lenta | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | | Fusobacterium nucleatum | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Prevotella melaninogenica | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Propionibacterium acnes | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | | Veillonella parvula | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Fungi (%) | 22 | 20 (90.9) | 0 (0.0) | 2 (9.1) | 0 (0.0) | 19 (86.4) | 3 (13.6) | 0 (0.0) | 0 (0.0) | | Candida albicans | 5 | 5 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | | Candida auris | 2 | 0 | 0 | 2 | 0 | 1 | 1 | 0 | 0 | | Candida dubliniensis | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Candida glabrata | 3 | 3 | 0 | 0 | 0 | 2 | 1 | 0 | 0 | | Candida krusei | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | | Candida orthopsilosis | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | | Candida parapsilosis | 3 | 3 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | | Candida tropicalis | 4 | 4 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | | Cryptococcus neoformans | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | | Total (%) | 205 | 200 (97.6) | 1 (0.5) | 2 (1.0) | 2 (1.0) | 199 (97.1) | 5 (2.4) | 0 (0.0) | 1 (0.5) |
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Abbreviations: ID = identification; MisID = misidentification.
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