| Microorganism |
MIC50
(μg/ml) |
MIC90
(μg/ml) |
Range
(μg/ml) |
Antimicrobial |
Reference |
| Proteus spp. |
- |
- |
≤1 － ? |
Gatifloxacin (Tequin)  |
457 |
| Proteus spp. |
- |
- |
≤1 － ? |
Norfloxacin (Noroxin) |
457 |
| Proteus spp. |
- |
- |
≤1 － ? |
Sparfloxacin (AT-4140, Zagam) |
457 |
| Proteus spp. |
- |
- |
>800 － ? |
Oxyfedrine |
925 |
| Proteus spp. (indole-negative) |
- |
- |
0.039 － ? |
AM-715 |
1439 |
| Proteus spp. (indole-negative) |
- |
- |
2.25 － ? |
Pipemidic acid |
1439 |
| Proteus spp. (indole-negative) |
- |
- |
4 － ? |
Nalidixic acid (NegGam) |
1439 |
| Proteus spp. (indole-positive) |
0.06 |
2 |
≤0.008 － 8 |
Cefmenoxime |
1438 |
| Proteus spp. (indole-positive) |
0.06 |
8 |
? － ? |
Ceftazidime (Ceptaz, Fortaz, Tanicef) |
204 |
| Proteus spp. (indole-positive) |
>0.06 |
>8 |
? － ? |
Ceftobiprole (Zeftera) |
942 |
| Proteus spp. (indole-positive) |
0.12 |
8 |
≤0.008 － 8 |
Cefotaxime (Cephotaxime, Claforan) |
1438 |
| Proteus spp. (indole-positive) |
4 |
16 |
1 － >128 |
Cefoxitin (Mefoxin) |
1438 |
| Proteus spp. (indole-positive) |
>4 |
>128 |
0.12 － >128 |
Cefamandole (Mandol) |
1438 |
| Proteus spp. (indole-positive) |
>128 |
>128 |
0.25 － >129 |
Cefazolin (Ancef, Kefzol, Zolicef) |
1438 |
| Proteus spp. (indole-positive) |
- |
- |
0.031 － ? |
AM-715 |
1439 |
| Proteus spp. (indole-positive) |
- |
- |
0.25 － >128 |
Cefamandole (Mandol) |
1447 |
| Proteus spp. (indole-positive) |
- |
- |
0.25 － >128 |
Cefazaflur |
1447 |
| Proteus spp. (indole-positive) |
- |
- |
0.25 － >128 |
Cefuroxime (Kefurox, Zinacef) |
1447 |
| Proteus spp. (indole-positive) |
- |
- |
0.5 － >128 |
Cefatrizine |
1447 |
| Proteus spp. (indole-positive) |
- |
- |
0.5 － >128 |
Cefazolin (Ancef, Kefzol, Zolicef) |
1447 |
| Proteus spp. (indole-positive) |
- |
- |
0.5 － 128 |
Cefoxitin (Mefoxin) |
1447 |
| Proteus spp. (indole-positive) |
- |
- |
0.5 － >128 |
Cephaloridine (Cefaloridine) |
1447 |
| Proteus spp. (indole-positive) |
- |
- |
0.5 － >128 |
Cephalothin (Cefalotin, Keflin, Seffin) |
1447 |
| Proteus spp. (indole-positive) |
- |
- |
1.57 － ? |
Pipemidic acid |
1439 |
| Proteus spp. (indole-positive) |
- |
- |
2 － >128 |
Cephalexin (Keflex, Keftal, Cefanox) |
1447 |
| Proteus spp. (indole-positive) |
- |
- |
4.1 － ? |
Nalidixic acid (NegGam) |
1439 |