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Table 2 Distribution of resistant phenotypes in different phylogroups detected in Escherichia coli strains isolated from yaks with diarrhea (n = 292)

From: Antibiotic resistance, serogroups, virulence genes, and phylogenetic groups of Escherichia coli isolated from yaks with diarrhea in Qinghai Plateau, China

Phylogroups (no.)

Resistant phenotypes, no.

AMP (n = 279)

TET (n = 263)

GEN (n = 232)

CHP (n = 221)

CEF (n = 212)

SXT (n = 180)

STR (n = 166)

CIP (n = 128)

A (n = 232)

223

204

195

189

166

138

132

99

B1 (n = 22)

22

22

17

6

17

18

14

11

B2 (n = 12)

12

12

3

11

10

9

7

0

D (n = 17)

17

17

14

14

15

13

13

9

F (n = 2)

2

2

1

0

2

2

0

2

ND (n = 7)

3

6

2

1

2

0

0

7

  1. AMP, ampicillin; TET, tetracycline; GEN, gentamicin; CHP, chloramphenicol; CEF, ceftriaxone; SXT, trimethoprim/sulfamethoxazole; STR, streptomycin; CIP, ciprofloxacin; ND, strains that were not assigned to any phylogroup
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Gut Pathogens

ISSN: 1757-4749