Volume 12, Number 6—June 2006
Research
Multidrug-resistant Commensal Escherichia coli in Children, Peru and Bolivia
Alessandro Bartoloni*
, Lucia Pallecchi†, Marta Benedetti*, Connie Fernandez‡, Yolanda Vallejos§, Elisa Guzman¶, Ana Liz Villagran§, Antonia Mantella*, Chiara Lucchetti†, Filippo Bartalesi*, Marianne Strohmeyer*, Angela Bechini*, Herlan Gamboa§, Hugo Rodríguez‡, Torkel Falkenberg#, Göran Kronvall#, Eduardo Gotuzzo**, Franco Paradisi*, and Gian Maria Rossolini†
, Lucia Pallecchi†, Marta Benedetti*, Connie Fernandez‡, Yolanda Vallejos§, Elisa Guzman¶, Ana Liz Villagran§, Antonia Mantella*, Chiara Lucchetti†, Filippo Bartalesi*, Marianne Strohmeyer*, Angela Bechini*, Herlan Gamboa§, Hugo Rodríguez‡, Torkel Falkenberg#, Göran Kronvall#, Eduardo Gotuzzo**, Franco Paradisi*, and Gian Maria Rossolini†
Table 2
Acquired resistance genes in 78 MDR commensal Escherichia coli*
| Resistance trait | No. resistant isolates | Resistance gene | No. (%)† positive isolates |
|---|---|---|---|
| Ampicillin | 78 | blaTEM | 77 (99) |
| Tetracycline | 78 | tet(A) | 27 (35) |
| tet(B) | 44 (56) | ||
| tet(D) | 4 (5) | ||
| tet(A) and tet(B) | 1 (1) | ||
| Trimethoprim | 78 | dfrA8 | 42 (54) |
| Sulfamethoxazole | 78 | sul1 | 7 (9) |
| sul2 | 54 (69) | ||
| sul1 and sul2 | 17 (22) | ||
| Chloramphenicol | 33 | catI | 33 (100) |
*MDR, multidrug resistant.
†Percentages refer to positive isolates among isolates resistant to each antimicrobial agent.
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