Table 1.

C. difficile strains in the de-replicated NCBI database (January 2020)

C. C. difficile clade	No. of genomes (%)	Most prevalent STs
C1	6713 (65.0 %)	ST 2 (9.2 %)*
		ST 8 (6.0 %)*
		ST 3 (5.4 %)*
		ST 42 (4.1 %)*
		ST 6 (3.2 %)*
		ST 44 (2.5 %)*
		ST 14 (2.4 %)*
C2	1951 (18.9 %)	ST 1 (16.6 %)*
		ST 41 (0.8 %)
C3	237 (2.3 %)	ST 5 (2.0 %)
		ST 22 (0.2 %)
C4	557 (5.4 %)	ST 37 (4.3 %)*
		ST 39 (0.2 %)
C5	847 (8.2 %)	ST 11 (7.6 %)*
		ST 167 (0.1 %)
Cryptic clades	25 (0.2 %)	ST 361 (<0.1 %)
		ST 177 (<0.1 %)
Total	10 330	–

*Ten most prevalent sequence types (STs) in this dataset.

ST, sequence type.