New Endemic Legionella pneumophila Serogroup I Clones, Ontario, Canada
Nathalie Tijet, Patrick Tang, Mya Romilowych, Carla Duncan, Victoria Ng, David N. Fisman, Frances Jamieson, Donald E. Low, and Cyril Guyard
Author affiliations: Ontario Agency for Health Protection and Promotion, Toronto, Ontario, Canada (N. Tijet, P. Tang, M. Romilowych, C. Duncan, D.N. Fisman, F. Jamieson, D.E. Low, C. Guyard); Research Institute of the Hospital for Sick Children, Toronto (V. Ng, D.N. Fisman); Australian National University, Canberra, Australian Capital Territory, Australia (V. Ng); University of Toronto, Toronto (F. Jamieson, D.E. Low, C. Guyard); Mount Sinai Hospital, Toronto (F. Jamieson, D.E. Low, C. Guyard)
Figure 2. Dendrogram created by the unweighted pair group method with arithmetic mean method based on the 62 allelic profiles of 194 Legionella pneumophila serogroup 1 isolates. Clonal groups (CGs) identified by eBURST (http://eBURST.mlst.net) are indicated with solid lines, and STs included in CGs are in boldface. Ontario STs included in clonal complexes (CC) identified by comparative eBURST analysis with the European Working Group for Legionella Infections database are indicated with dashed lines. The 3 major clusters are indicated on the right of the figure with bold lines. The number of strains isolated in Ontario is indicated below CG. Scale bar indicates linkage distances.
The opinions expressed by authors contributing to this journal do not necessarily reflect the opinions of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.