TABLE 2.
Prevalence and mean degree of resistance of fecal enterococci at the start of the study and at the end of the study in the separate compartmentsa
| Antibiotic | Concn in agar (mg/liter) | Start of study (n = 165)b
|
End of study
|
||||||
|---|---|---|---|---|---|---|---|---|---|
| Compartment A (n = 55) | Compartment B (n = 54) | Compartment C (n = 53) | |||||||
| Prev | MD | Prev | MD | Prev | MD | Prev | MD | ||
| Gentamicin | 1,000 | 63 | 9 | 7 | <1 | 26 | 1 | 25 | <1 |
| Ampicillin | 25 | 0 | <1 | 4 | <1 | 0 | <1 | 0 | <1 |
| Erythromycin | 8 | 99 | 81 | 100 | 81 | 100 | 86 | 100 | 93* |
| Flavophospholipol | 8 | 23c | 22 | 13c | 12 | 43c | 11 | 28c | 2* |
| Vancomycin | 8 | 0 | <1 | 44 | 1 | 41 | 5 | 72 | 89*# |
a
n, number of samples; Prev, prevalence; MD, mean degree of resistance; <1, below detection level. Statistical significance: *, P < 0.05 in comparison to the start of the study; #, P < 0.05 compartment A in comparison with compartment B; #, P < 0.05 compartment C in comparison with compartment B.
b
Total of compartments A, B, and C.
c
Only E. faecalis.