Table 2

Species of clinical isolates that were identified by phenotypic identification as species that had been rarely reported as human pathogensa

PhylumGenusBacterial rare species identified by PIDNo. of isolatesIdentification method(s)No. of isolates identified by CPINo. of isolates identified by MALDI-TOF MSNo. of reports in PubMed
ActinobacteriaActinobaculumActinobaculum massiliense1MALDI-TOF MS014
ActinomaduraActinomadura cremea1CPI106
ActinomycesActinomyces europaeus12CPI and MALDI-TOF MS399
Actinomyces radicidentis3MALDI-TOF MS034
Actinomyces radingae20CPI and MALDI-TOF MS51510
ArthrobacterArthrobacter cumminsii5CPI and MALDI-TOF MS324
BrevibacteriumBrevibacterium luteolum1CPI104
Brevibacterium massiliense1MALDI-TOF MS012
Brevibacterium paucivorans1MALDI-TOF MS013
Brevibacterium ravenspurgense1MALDI-TOF MS010
CorynebacteriumCorynebacterium auriscanis3CPI305
Corynebacterium coyleae7CPI and MALDI-TOF MS257
Corynebacterium fastidiosum2MALDI-TOF MS020
Corynebacterium imitans2MALDI-TOF MS022
Corynebacterium mucifaciens5MALDI-TOF MS056
MicrobacteriumMicrobacterium schleiferi1MALDI-TOF MS016
PseudoclavibacterPseudoclavibacter bifida1CPI101
VaribaculumVaribaculum cambriense2CPI392
BacteroidetesAlistipesAlistipes finegoldii3CPI and MALDI-TOF MS034
BacteroidesBacteroides cellulosilyticus4MALDI-TOF MS5152
ButyricimonasButyricimonas virosa1MALDI-TOF MS321
PorphyromonasPorphyromonas somerae9CPI and MALDI-TOF MS101
PrevotellaCandidatus Prevotella conceptionensis”3CPI and MALDI-TOF MS011
Prevotella massiliensis1CPI012
FirmicutesAcidaminococcusAcidaminococcus intestini2CPI and MALDI-TOF MS012
AnaerococcusAnaerococcus lactolyticus3MALDI-TOF MS3409
Anaerococcus octavius7MALDI-TOF MS253
EubacteriumEubacterium tenue2MALDI-TOF MS026
Eubacterium yurii1MALDI-TOF MS0210
FacklamiaFacklamia languida1CPI052
PeptoniphilusPeptoniphilus harei95CPI and MALDI-TOF MS017
RobinsoniellaRobinsoniella peoriensis3MALDI-TOF MS108
SporosarcinaSporosarcina ginsengisoli1CPI201
StreptococcusStreptococcus massiliensis4MALDI-TOF MS121
TuricibacterTuricibacter sanguinis3CPI and MALDI-TOF MS043
VeillonellaVeillonella montpellierensis1MALDI-TOF MS013
FusobacteriaLeptotrichiaLeptotrichia goodfellowii1CPI185
Leptotrichia trevisanii3CPI123
ProteobacteriaAcinetobacterAcinetobacter parvus2MALDI-TOF MS108
ComamonasComamonas kerstersii2MALDI-TOF MS113
EnterobacterEnterobacter cowanii3MALDI-TOF MS039
Enterobacter kobei272MALDI-TOF MS0710
OchrobactrumOchrobactrum grignonense1MALDI-TOF MS028
PandoraeaPandoraea pulmonicola31MALDI-TOF MS017
ParacoccusParacoccus yeeii2CPI and MALDI-TOF MS101
PseudomonasPseudomonas hibiscicola2MALDI-TOF MS11844
RoseomonasRoseomonas ludipueritiae1CPI034
SerratiaSerratia ureilytica1MALDI-TOF MS106
  • 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).