Determining Clostridium difficile intra-taxa diversity by mining multilocus sequence typing databases

Table 1 Results of tests for the recombination based on Dnasp 4.0

Sk^2: variance of the average number of nucleotide differences between pairs of sequences
Φ: product of effective population size and neutral mutation rate per site
C/μ: ratio between per-site recombination rate and per-site mutation rate
RM: minimum number of recombination events in the history of the sample