Figure 2. Monthly occurrence of pulsed-field gel electrophoresis (PFGE) types (A) and multiple-locus variable-number tandem-repeat analysis (MLVA) ypes (B) within Salmonella Typhimurium isolates with phage type DT104 over the 2-year study period. All PFGE and MLVA types that occurred <4× were included in other types.
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