Table 1.
Antibiotic Sensitivities of Isolated Gram Positive Organisms
| Organism | Bacitracin | Cephalothin | Erythromycin | Vancomycin | Sulfasoxazole | Trimethoprim | Moxifloxacin | Ciprofloxacin | Ofloxacin |
|---|---|---|---|---|---|---|---|---|---|
|
Oxacillin Sensitive S. aureus N = 105 |
95/104 (90%) |
105/105 (100%) |
75/104 (72%) |
81/81 (100%) |
100/105 (95%) |
101/105 (96%) |
54/59 (92%) |
96/104 (92%) |
– |
|
Oxacillin Resistant S. aureus N = 26 |
17/26 (65%) |
0/0* (0%) |
1/25 (4%) |
18/18ϕ (100%) |
26/26 (100%) |
25/26 (96%) |
2/21 (10%) |
2/25 (8%) |
– |
|
S. pneumonia N = 51 |
51/51 (100%) |
– | 39/51 (76%) |
51/51 (100%) |
47/51 (92%) |
30/51 (59%) |
24/24 (100%) |
– | 46/46 (100%) |
|
S. viridans N = 69 |
53/53 (100%) |
– | 30/62 (48%) |
63/63 (100%) |
46/47 (98%) |
29/47 (62%) |
33/34 (97%) |
– | 41/48 (85%) |
|
Oxacillin Sensitive Coag neg staph N = 52 |
26/32 (81%) |
32/32 (100%) |
18/32 (56%) |
30/30 (100%) |
29/32 (91%) |
23/32 (72%) |
6/9 (67%) |
26/31 (84%) |
2/2 (100%) |
|
Oxacillin Resistant Coag neg staph N = 55 |
43/55 (78%) |
9/53 (17%) |
14/55 (25%) |
44/45 (98%) |
48/55 (87%) |
37/54 (69%) |
4/31 (13%) |
9/48 (19%) |
9/9 (100%) |
Most frequently isolated gram positive organisms isolated in culture. The numerator displays the number of samples sensitive to the listed antibiotic while the denominator represents the total number of the organism isolated. Percent sensitivity to the antibiotic is shown in the parenthesis.
Of note Ofloxacin was tested in Streptococcus, and Ciprofloxacin was tested against all other gram positive organisms.
*
Were not tested as they were assumed to be resistant
ϕ
In 2010, CLSI stopped reporting vancomycin susceptibilities with regards to MRSA as disc diffusion was not shown to be effective in determining susceptibility