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Volume 12, Number 6—June 2006

Research

Multidrug-resistant Commensal Escherichia coli in Children, Peru and Bolivia

Alessandro Bartoloni*Comments to Author , 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†
Author affiliations: *Università di Firenze, Florence, Italy; †Università di Siena, Siena, Italy; ‡Hospital Apoyo Yurimaguas, Yurimaguas–Loreto, Peru; §Servicio Departamental de Salud Santa Cruz, Camiri, Bolivia; ¶Hospital Moyobamba, Moyobamba–San Martin, Peru; #Karolinska Institute, Stockholm, Sweden; **Universidad Peruana Cayetano Heredia, Lima, Peru

Main Article

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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