Volume 11, Number 8—August 2005
Dispatch
Drug-resistant Diarrheogenic Escherichia coli, Mexico
Table 2
Diarrheogenic Escherichia coli resistance patterns*†
No. patients | Tet, n (%) | Amp, n (%) | TMP-SMX, n (%) | Chlor, n (%) | MDR, n (%) |
---|---|---|---|---|---|
ETEC (n = 17) | 16 (94) | 15 (88) | 12 (71) | 2 (12) | 11 (65) |
EAEC (n = 16) | 15 (94) | 13 (81) | 14 (88) | 3 (19) | 11 (69) |
aEPEC (n = 13) | 6 (46) | 5 (38) | 5 (38) | 2 (15) | 5 (38) |
STEC (n = 11) | 9 (81) | 8 (72) | 7 (63) | 4 (36) | 7 (63) |
EPEC (n = 3) | 3 (100) | 3 (100) | 2 (67) | 0 | 2 (67) |
EIEC (n = 2) | 1 (50) | 1 (50) | 0 | 1 (50) | 1 (50) |
Total (n = 62) | 51 (82) | 45 (73) | 40 (65) | 12 (19) | 36 (58) |
*All isolates were susceptible to ciprofloxacin and cefotaxime. One STEC (9% of STEC or 2% of all isolates) was resistant to gentamicin; all other isolates were susceptible.
†Tet, tetracycline; Amp, ampicillin; TMP-SMX, trimethoprim-sulfamethoxazole; Chlor, chloramphenicol; MDR, multidrug resistant; ETEC, enterotoxigenic E. coli; EAEC, enteroaggregative E. coli; aEPEC, atypical enteropathogenic E. coli; STEC, Shiga toxin–producing E. coli; EPEC, enteropathogenic E. coli; EIEC, enteroinvasive E. coli.