UCSF Adult Inpatient Susceptibility Data (Gram-Positives)1 

R-testing not applicable to organism and should be considered resistant, AMP-ampicillin, CLIN-clindamycin, CTRX-ceftriaxone, DAP-daptomycin, DOX-doxycycline, LZD-linezolid, NAF-nafcillin, PCN-penicillin G, T/S-trimethoprim/sulfamethoxazole, VANC-vancomycin 

Total isolates include floor isolates and ICU isolates from Parnassus, MB Adult, and MZ 
Reported as % susceptible, tested from all sites except as indicated

Organism 

Total Isolates 

AMP/PCN2

CLIN 

CTRX 

DAP 

DOX 

LZD 

NAF 

T/S 

VANC 

Staphylococcus aureus 

916

N/A 

71

N/A 

100 

85

99

72 

95 

99

       MSSA

672

N/A 

75

N/A 

100 

92

100 

99 

97 

100 

       MRSA

266

N/A 

60

N/A 

100 

66

99

N/A

91

99 

Staphylococcus epidermidis 

240 

N/A 

57

N/A 

100 

72

99

32

50

100 

Staphylococcus lugdunesis 

52

N/A 

86

N/A 

100 

90

100 

78

96

100 

Viridans group streptococci3

92

74

81

95

 

61 

 

 

 

100 

Streptococcus anginosus group  39 97 81 100   52       100

        Streptococcus mitis

45

66

77

95

 

71

 

 

 

100 

Enterococcus faecalis 

289

98

N/A 

N/A 

 

25

 

N/A 

N/A 

96

Enterococcus faecium

182

11

N/A

N/A 

984 

18

96 

N/A

N/A 

39

1Adult inpatient susceptibilities include data from 1/1/2024 - 12/31/2024; 2Reflects ampicillin for Enterococcus spp & penicillin G for Streptococcus spp; 3Viridans group streptococci include S. anginosus, S. constellatus, S. intermedius, S. milleri, S. mitis, S. mutans, S.  oralis, S. parasanguinis, S. salivarius, & S. sobrinus; 4Represents susceptible dose-dependent isolates only