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. 2015 May 27;6:483. doi: 10.3389/fmicb.2015.00483

Table 3.

Number of enterococci isolates (percentage of total speciesa) showing intermediate or complete resistance to antibiotics pooled across treatments, isolation media and sample date.

Enterococcus spp. Antibioticb (No. isolates [%])
AMP DOX ERY GEN LVX LZD NIT Q-D STR TGC TYLc VAN
E. hirae (n = 98) I n/a 8 (8.2) 27 (27.6) 0 0 0 0 7 (7.1) 0 n/a n/a 0
R 0 0 42 (42.9) 0 0 0 0 0 0 0 69 (70.4) 0
E. villorum(n = 32) I n/a 0 0 0 0 0 0 0 0 n/a n/a 0
R 0 0 31 (96.9) 0 0 0 0 0 0 0 31 (96.9) 0
E. faecium (n = 21) I n/a 1 (4.8) 5 (23.8) 0 2 (9.5) 0 2 (9.5) 2 (9.5) 0 n/a n/a 0
R 0 1 (4.8) 14 (66.7) 0 0 0 0 0 0 0 1 (4.8) 0
E. durans (n = 7) I n/a 0 0 0 0 0 0 1 (14.3) 0 n/a n/a 0
R 0 0 1 (14.3) 0 0 0 0 0 0 0 1 (14.3) 0
E. casseliflavus (n = 4) I n/a 0 0 0 0 0 0 0 0 n/a n/a 1 (25.0)
R 0 0 2 (50.0) 0 0 0 0 1 (25.0) 0 0 2 (50.0) 0
E. mundtii (n = 4) I n/a 0 0 0 0 0 0 0 0 n/a n/a 0
R 0 0 0 0 0 0 0 0 0 0 0 0
E. gallinarum (n = 3) I n/a 0 2 (66.7) 0 0 0 0 0 0 n/a n/a 0
R 0 0 0 0 0 0 0 0 0 0 2 (66.7) 0
E. faecalis (n = 1) I n/a 0 0 0 0 0 0 0 0 n/a n/a 0
R 0 0 0 0 0 0 0 1 (100.0) 0 0 0 0
E. thailandicus (n = 1) I n/a 0 1 (100.0) 0 0 0 0 0 0 n/a n/a 0
R 0 0 0 0 0 0 0 0 0 0 0 0
a

Percentages were calculated by dividing resistant isolates with the total number of isolates for individual species and rounded to the first decimal place.

b

AMP, ampicillin; DOX, doxycycline; ERY, erythromycin; GEN, gentamicin; LVX, levofloxacin; LZD, linezolid; NIT, nitrofurantoin; Q-D, quinupristin-dalfopristin; STR, streptomycin; TGC, tigecycline; TYL, tylosin; VAN, vancomycin.

c

Resistance isolates were classified as those which carried the erm(B) resistance gene (see Section Materials and Methods for more information).

R, complete resistance; I, intermediate resistance; n/a, no interpretive criteria for intermediate resistance.