Ann Clin Microbiol 2020;23:211-216. A Case of Prosthetic Valve Endocarditis with Cerebral Hemorrhage Caused by Rothia mucilaginosa

Table 1. Antibiotic susceptibility of Rothia mucilaginosa
AntibioticsSusceptibility*Inhibition zone diameter (mm)Minimal inhibitory concentration (μg/mL)
PenicillinS46–
Ampicillin-sulbactamS45–
ClindamycinR11–
ErythromycinS42–
RifampinS43–
TetracyclineS34–
LevofloxacinS30–
Trimethoprim-sulfamethoxazoleR0–
TobramycinR0–
VancomycinS–1

*The drug susceptibility of Rothia mucilaginosain the present case was determined by using disk diffusion test according to the 2011 Clinical and Laboratory Standards Institute (M100-S21) criteria for staphylococci. The vancomycin susceptibility was determined by E-test because the disk test is not available for differentiating among vancomycin-susceptible, -intermediate, and -resistant isolates of Staphylococcus spp.
Abbreviations: S,susceptible; R,resistant.