Molecular Epidemiology of Invasive Listeriosis due to Listeria monocytogenes in a Spanish Hospital over a Nine-Year Study Period, 2006–2014

Figure 3

Genetic relationships between 17 clinical isolates of Listeria monocytogenes, based upon comparison of pulsed-field gel electrophoresis profiles obtained with the restriction enzymes ApaI and AscI. The dendrogram was produced with a Dice similarity coefficient matrix, using the unweighted pair group method with arithmetic mean (UPGMA). Tolerance and optimisation values were set to 1.5%. Clusters are arbitrarily designated A to C. Scale bar indicates similarity values.