Correction for Cairns et al., "Comparative Genome Analysis and Global Phylogeny of the Toxin Variant Clostridium difficile PCR Ribotype 017 Reveals the Evolution of Two Independent Sublineages".

Page 868, Table 2: The entry corresponding to sublineage 1 in the "Country of origin" column should read "Argentina, Australia, Bulgaria, Canada, China, Czech Republic, Greece, Hong Kong, Ireland, Japan, South Korea, Kuwait, Poland, Portugal, Romania, Singapore, Slovenia, South Africa, The Netherlands, UK, USA." Page 868, Table 2: The entry corresponding to sublineage 2 in the "Country of origin" column should read "Australia, Hong Kong, Indonesia, Japan, South Korea, Poland, Singapore, South Africa, Taiwan, The Netherlands, UK, USA." Page 869, Fig. 1: The labels SL1 and SL2 are incorrectly placed. The upper portion should be labelled "SL2," and the lower portion should be labelled "SL1." Page 869, Fig. 1 legend, lines 3 and 4: The sentence beginning "The SL1 and SL2 sublineages" should read "The SL1 and SL2 sublineages were differentiated by four SNPs (Table 3), with the reference strain M68 falling into SL1." Page 871, Figure 3 legend, line 2: The sentence beginning "The analysis indicates a split" should read "The analysis indicates a split from SL2 (lower) into SL1 (upper) c1990, with the M68 reference in SL1."