TABLE 2.

Characteristics of E. coli O157 isolates obtained from the point prevalence study

FeedlotIsolateIsolation methodVirulence profile (presence of gene)RAPD patternAntibiotic resistanceCytotoxicity value (range)
IMSCulturestx1stx2hlyAeaeA
ZZ-6+++++1Sulfisoxazole9.1-10
Z-8+++++3Sulfisoxazole8.1-9.0
Z-11++++++1Sulfisoxazole9.1-10
Z-14+++++1Sulfisoxazole8.1-9.0
Z-19+++++3Sulfisoxazole8.1-9.0
Z-27++++++5Sulfisoxazole9.1-10
Z-30++++++3Sulfisoxazole7.1-8.0
Z-37+++++3Sulfisoxazole7.1-8.0
Z-38+++++5Sulfisoxazole8.1-9.0
TT-16+++++1Susceptible9.1-10
T-20a+
T-22+++++1Tetracycline8.1-9.0
T-33+++++5Sulfisoxazole8.1-9.0
T-36++++++5Sulfisoxazole9.1-10
BB-1+++++5Susceptible7.1-8.0
B-3++++++5Tetracycline8.1-9.0
B-4+++++5Tetracycline9.1-10
B-16+++++4Tetracycline9.1-10
B-19++++++2Tetracycline9.1-10
B-22+++++6Susceptible8.1-9.0
B-23+++++6Susceptible7.1-8.0
B-27+++++6Susceptible9.1-10
B-30++++6Sulfisoxazole9.1-10
B-33++++++6Sulfisoxazole9.1-10
B-36++++++6Sulfisoxazole, tetracycline9.1-10
B-38+++++6Sulfisoxazole, tetracycline7.1-8.0
PP-2++++6Susceptible7.1-8.0
P-3+++++6Sulfisoxazole9.1-10
P-4+++++16Susceptible9.1-10
P-5+++++38Sulfisoxazole9.1-10
P-7+++++6Sulfisoxazole9.1-10
P-9+++++18Sulfisoxazole8.1-9.0
P-11+++++17Sulfisoxazole9.1-10
P-13+++++18Sulfisoxazole9.1-10
P-16++++17Susceptible6.1-7.0
P-21++++++18Sulfisoxazole8.1-9.0
P-26++++17Susceptible9.1-10
P-27++++17Sulfisoxazole9.1-10
P-28+++++17Sulfisoxazole9.1-10
P-29+++++18Sulfisoxazole9.1-10
P-36+++++18Sulfisoxazole9.1-10
P-37+++++18Sulfisoxazole9.1-10
P-40++++17Sulfisoxazole9.1-10
SS-1a++
S-4+++++5Susceptible9.1-10
S-5++++++5Susceptible9.1-10
S-6+++++13Chloramphenicol, tetracycline, streptomycin, sulfisoxazole7.1-8.0
S-7++++5Susceptible7.1-8.0
S-8++++++5Susceptible6.1-7.0
S-10++++++5Susceptible6.1-7.0
S-11+++++5Susceptible7.1-8.0
S-14++++++5Susceptible6.1-7.0
S-16++++++5Susceptible6.1-7.0
S-17++++++5Susceptible8.1-9.0
S-19+++++5Susceptible7.1-8.0
S-26++++++7Susceptible8.1-9.0
S-27+++++5Susceptible9.1-10
S-28++++5Susceptible7.1-8.0
S-30+++++5Sulfisoxazole7.1-8.0
S-32++++++5Sulfisoxazole8.1-9.0
S-33++++++5Susceptible7.1-8.0
S-34+++++5Susceptible9.1-10
S-37++++++7Susceptible8.1-9.0
S-38++++13Chloramphenicol, tetracycline, streptomycin, sulfisoxazole8.1-9.0
S-39++++5Sulfisoxazole8.1-9.0
S-40+++++5Sulfisoxazole7.1-8.0
MM-2+++++7Susceptible9.1-10
M-4+++++14Susceptible9.1-10
M-5++++14Susceptible8.1-9.0
M-6+++++5Sulfisoxazole9.1-10
M-8++++5Chloramphenicol, tetracycline, streptomycin, sulfisoxazole9.1-10
M-9++++5Susceptible9.1-10
M-13++++7Susceptible9.1-10
M-14++++5Sulfisoxazole7.1-8.0
M-15++++10Susceptible9.1-10
M-16++++7Susceptible6.1-7.0
M-17+++++10Sulfisoxazole9.1-10
M-19+++++11Sulfisoxazole9.1-10
M-21+++++9Sulfisoxazole9.1-10
M-22++++++19Susceptible9.1-10
M-23+++++39Susceptible8.1-9.0
M-26+++++19Sulfisoxazole7.1-8.0
M-27+++++14Sulfisoxazole8.1-9.0
M-29++++19Sulfisoxazole8.1-9.0
M-31+++++10Sulfisoxazole9.1-10
M-33++++11Susceptible9.1-10
M-34+++++15Susceptible9.1-10
M-40+++++11Sulfisoxazole7.1-8.0
WW-12++++++19Sulfisoxazole7.1-8.0
W-37++++++19Sulfisoxazole9.1-10
HMHM-3++++++12Sulfisoxazole7.1-8.0
HM-6+++++11Susceptible6.1-7.0
HM-8+++++11Susceptible8.1-9.0
HM-11+++++11Sulfisoxazole8.1-9.0
HM-13+++++11Sulfisoxazole9.1-10
HM-14++++++11Sulfisoxazole8.1-9.0
HM-19++++++11Sulfisoxazole9.1-10
HM-20++++++11Sulfisoxazole7.1-8.0
HM-22++++++11Sulfisoxazole8.1-9.0
HM-23+++++11Sulfisoxazole9.1-10
HM-25++++++5Sulfisoxazole9.1-10
HM-26+++++12Sulfisoxazole9.1-10
HM-27++++++8Sulfisoxazole8.1-9.0
HM-28+++++12Sulfisoxazole8.1-9.0
HM-34+++++12Sulfisoxazole7.1-8.0
HM-35++++++12Sulfisoxazole9.1-10
MTMT-2++++++23Sulfisoxazole9.1-10
MT-3++++++25Sulfisoxazole9.1-10
MT-4+++++25Sulfisoxazole9.1-10
MT-6+++++25Sulfisoxazole9.1-10
MT-7+++++25Susceptible9.1-10
MT-9+++++26Susceptible9.1-10
MT-17++++++26Susceptible9.1-10
MT-18++++++25Sulfisoxazole9.1-10
MT-21++++++17Susceptible9.1-10
MT-25+++++2Susceptible9.1-10
MT-30++++++25Susceptible9.1-10
MT-34+++++25Sulfisoxazole9.1-10
MT-38++++++25Susceptible9.1-10
KK-4+++++28Tetracycline, sulfisoxazole9.1-10
K-5+++++29Tetracycline, sulfisoxazole9.1-10
K-7+++++29Tetracycline, sulfisoxazole9.1-10
K-11++++++29Tetracycline, sulfisoxazole9.1-10
K-12+++++29Tetracycline, sulfisoxazole9.1-10
K-28+++++29Tetracycline, sulfisoxazole8.1-9.0
WEWE-4+++++26Sulfisoxazole8.1-9.0
WE-14++++++26Sulfisoxazole9.1-10
WE-18+++++26Sulfisoxazole9.1-10
WE-23++++++19Sulfisoxazole9.1-10
WE-27+++++26Sulfisoxazole9.1-10
WE-28+++++26Sulfisoxazole9.1-10
WE-29+++++24Sulfisoxazole9.1-10
II-31++++++17Susceptible9.1-10
  • a Could not be subcultured after initial recovery.