Table 2.

Genotypic characteristics of outbreak-related isolates ofS. typhimurium and the type strain

StrainrDN RFLP patternRibotypePFGEXbaIaRAPD results
EcoRIPvuIIBglIISmaIWith primerOverall pattern
217 d2A3B1
ATCC 43971E1P1B1S11aaaA
From patients
 S124E2P2B2S22bbaB
 S1E2P2B2S22X1cbbC
 S2E2P2B2S22X1cbbC
 S3E2P2B2S22X1cbbC
 S4E2P2B2S22X1cbbC
 S5E2P2B2S22cbbC
 S6E2P2B2S22X2cbbC
 S7E2P2B2S22X1cbbC
 S8E2P2B2S22X1cbbC
 S9E2P2B2S22X2cbbC
 S10E2P2B2S22X2cbbC
From nurses
 S11E2P2B2S22X1cbbC
 S12E2P2B2S22X1cbbC
  • a The macrorestriction genotype was determined by PFGE after digestion with XbaI. The two patterns were designated X1 and X2.