Figure. Pulsed-field gel electrophoresis patterns of 6 Listeria monocytogenes serotype 1/2b isolates collected from listeriosis patients in Gipuzkoa, northern Spain, during January 2013–February 2014. Left side, after AscI restriction; right side, after SmaI restriction. Lanes 1 and 2, isolates from first outbreak (pattern A); lanes 3, 4, and 5, isolates from second outbreak (pattern B), including (lane 5) 1 isolate from a food product of foie gras; lane 6, L. monocytogenes sequence type 3 serotype 1/2b isolate, unrelated to outbreaks. MW, DNA molecular weight marker (50-kbp ladder).