Volume 10, Number 1—January 2004
Research
Escherichia coli Producing CTX-M-2 β-Lactamase in Cattle, Japan
Yutaka Shiraki*
, Naohiro Shibata†, Yohei Doi†, and Yoshichika Arakawa†
, Naohiro Shibata†, Yohei Doi†, and Yoshichika Arakawa†Table 1
Number of β-lactamase producers isolated from cattlea
| Sample (no.) | Species | Acidmetric β-lactamase test | PCR typing | |||
|---|---|---|---|---|---|---|
| Total | PC | PC and CS | CS | |||
| Feces (396) | Escherichia coli | 32 | 7 | 19 | 6 | 7 (CTX-M-2) |
| Citrobacter koseri | 2 | 2 | 0 | 0 | 0 | |
| Swabb (270) | E. coli | 5 | 2 | 2 | 1 | 2 (CTX-M-2) |
| C. freundii | 1 | 0 | 1 | 0 | 0 | |
aPC, penicillinase; CS, cephalosporinase; PCR, polymerase chain reaction.
bSwab, surface swab of cattle carcass.
