TABLE 1.
Microbiologic characteristics of the derivatives of E. faecalis inoculated
| Strain | Plasmid content | Virulence factor | Antimicrobial resistancea |
|---|---|---|---|
| OG1X | None | None | None |
| OG1RF | None | Gel | RI + FA |
| OG1X | pAM 9058 (Tn917) | Agg | EM |
| OG1X | pAM 944 (Tn917) | Cly | EM |
| OG1X | pAM 714 (Tn917) | Cly + Agg | EM |
| OG1SSP | pCF10 (Tn915) | Gel + Agg | TC |
a
All of these strains of E. faecalis had an intrinsic low-level chromosomal resistance to aminoglycosides. OG1RF had a constitutive chromosomal resistance to rifampin and to fucidic acid. Resistance to erythromycin and tetracycline was plasmid encoded. RI, rifampin; FA, fusidic acid; EM, erythromycin; and TC, tetracycline.