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Table 1 Characteristics of the isolates included in the study

From: Shigella sonnei biotype g carrying class 2 integrons in southern Italy: a retrospective typing study by pulsed field gel electrophoresis

Years

Number of isolates

Susceptibility pattern

Class 2 integron

1971–1980

5

Susceptible

Negative

 

4

SmSuTc

"

 

3

SmSu

"

 

1

SmSuCmTc

"

 

1

SmSuCm

"

 

1

Su

"

1981–1990

7

SmSuTcTp

Positive

 

1

ApSmSuTcTp

Positive

1991–2000

5

SmSuTcTp

Positive

 

1

SmSuTcTp

Negative

 

2

SmSuTp

Positive

  1. Ap = ampicillin; Cm = cloramphenicol; Sm = streptomycin; Su = sulfonamides; Tc = tetracycline; Tp = trimethoprim