Table 2.
Species of clinical isolates that were identified by phenotypic identification as species that had been rarely reported as human pathogensa
| Phylum | Genus | Bacterial rare species identified by PID | No. of isolates | Identification method(s) | No. of isolates identified by CPI | No. of isolates identified by MALDI-TOF MS | No. of reports in PubMed |
|---|---|---|---|---|---|---|---|
| Actinobacteria | Actinobaculum | Actinobaculum massiliense | 1 | MALDI-TOF MS | 0 | 1 | 4 |
| Actinomadura | Actinomadura cremea | 1 | CPI | 1 | 0 | 6 | |
| Actinomyces | Actinomyces europaeus | 12 | CPI and MALDI-TOF MS | 3 | 9 | 9 | |
| Actinomyces radicidentis | 3 | MALDI-TOF MS | 0 | 3 | 4 | ||
| Actinomyces radingae | 20 | CPI and MALDI-TOF MS | 5 | 15 | 10 | ||
| Arthrobacter | Arthrobacter cumminsii | 5 | CPI and MALDI-TOF MS | 3 | 2 | 4 | |
| Brevibacterium | Brevibacterium luteolum | 1 | CPI | 1 | 0 | 4 | |
| Brevibacterium massiliense | 1 | MALDI-TOF MS | 0 | 1 | 2 | ||
| Brevibacterium paucivorans | 1 | MALDI-TOF MS | 0 | 1 | 3 | ||
| Brevibacterium ravenspurgense | 1 | MALDI-TOF MS | 0 | 1 | 0 | ||
| Corynebacterium | Corynebacterium auriscanis | 3 | CPI | 3 | 0 | 5 | |
| Corynebacterium coyleae | 7 | CPI and MALDI-TOF MS | 2 | 5 | 7 | ||
| Corynebacterium fastidiosum | 2 | MALDI-TOF MS | 0 | 2 | 0 | ||
| Corynebacterium imitans | 2 | MALDI-TOF MS | 0 | 2 | 2 | ||
| Corynebacterium mucifaciens | 5 | MALDI-TOF MS | 0 | 5 | 6 | ||
| Microbacterium | Microbacterium schleiferi | 1 | MALDI-TOF MS | 0 | 1 | 6 | |
| Pseudoclavibacter | Pseudoclavibacter bifida | 1 | CPI | 1 | 0 | 1 | |
| Varibaculum | Varibaculum cambriense | 2 | CPI | 3 | 9 | 2 | |
| Bacteroidetes | Alistipes | Alistipes finegoldii | 3 | CPI and MALDI-TOF MS | 0 | 3 | 4 |
| Bacteroides | Bacteroides cellulosilyticus | 4 | MALDI-TOF MS | 5 | 15 | 2 | |
| Butyricimonas | Butyricimonas virosa | 1 | MALDI-TOF MS | 3 | 2 | 1 | |
| Porphyromonas | Porphyromonas somerae | 9 | CPI and MALDI-TOF MS | 1 | 0 | 1 | |
| Prevotella | “Candidatus Prevotella conceptionensis” | 3 | CPI and MALDI-TOF MS | 0 | 1 | 1 | |
| Prevotella massiliensis | 1 | CPI | 0 | 1 | 2 | ||
| Firmicutes | Acidaminococcus | Acidaminococcus intestini | 2 | CPI and MALDI-TOF MS | 0 | 1 | 2 |
| Anaerococcus | Anaerococcus lactolyticus | 3 | MALDI-TOF MS | 3 | 40 | 9 | |
| Anaerococcus octavius | 7 | MALDI-TOF MS | 2 | 5 | 3 | ||
| Eubacterium | Eubacterium tenue | 2 | MALDI-TOF MS | 0 | 2 | 6 | |
| Eubacterium yurii | 1 | MALDI-TOF MS | 0 | 2 | 10 | ||
| Facklamia | Facklamia languida | 1 | CPI | 0 | 5 | 2 | |
| Peptoniphilus | Peptoniphilus harei | 95 | CPI and MALDI-TOF MS | 0 | 1 | 7 | |
| Robinsoniella | Robinsoniella peoriensis | 3 | MALDI-TOF MS | 1 | 0 | 8 | |
| Sporosarcina | Sporosarcina ginsengisoli | 1 | CPI | 2 | 0 | 1 | |
| Streptococcus | Streptococcus massiliensis | 4 | MALDI-TOF MS | 1 | 2 | 1 | |
| Turicibacter | Turicibacter sanguinis | 3 | CPI and MALDI-TOF MS | 0 | 4 | 3 | |
| Veillonella | Veillonella montpellierensis | 1 | MALDI-TOF MS | 0 | 1 | 3 | |
| Fusobacteria | Leptotrichia | Leptotrichia goodfellowii | 1 | CPI | 1 | 8 | 5 |
| Leptotrichia trevisanii | 3 | CPI | 1 | 2 | 3 | ||
| Proteobacteria | Acinetobacter | Acinetobacter parvus | 2 | MALDI-TOF MS | 1 | 0 | 8 |
| Comamonas | Comamonas kerstersii | 2 | MALDI-TOF MS | 1 | 1 | 3 | |
| Enterobacter | Enterobacter cowanii | 3 | MALDI-TOF MS | 0 | 3 | 9 | |
| Enterobacter kobei | 272 | MALDI-TOF MS | 0 | 7 | 10 | ||
| Ochrobactrum | Ochrobactrum grignonense | 1 | MALDI-TOF MS | 0 | 2 | 8 | |
| Pandoraea | Pandoraea pulmonicola | 31 | MALDI-TOF MS | 0 | 1 | 7 | |
| Paracoccus | Paracoccus yeeii | 2 | CPI and MALDI-TOF MS | 1 | 0 | 1 | |
| Pseudomonas | Pseudomonas hibiscicola | 2 | MALDI-TOF MS | 11 | 84 | 4 | |
| Roseomonas | Roseomonas ludipueritiae | 1 | CPI | 0 | 3 | 4 | |
| Serratia | Serratia ureilytica | 1 | MALDI-TOF MS | 1 | 0 | 6 |
a
List of 48 species of 534 clinical isolates that were identified by phenotypic identification as species that had been rarely reported as human pathogens, with ≤10 reports in PubMed. PID, phenotypic identification; CPI, conventional phenotypic identification (Gram staining, API, Vitek 2 system identification).