Table 3.

Pair-wise comparisons of housekeeping alleles among isolates of the same emm type

emm typeaNo. of isolatesNo. of pair-wise comparisons% of pairs with identical loci:
7 of 76 of 75 of 74 of 73 of 72 of 71 of 70 of 7
193628331728084
25101000000000
39365839300000
4828324314110000
5461000000000
6461000000000
11510103030300000
125101000000000
187211000000000
19463367000000
335101000000000
44/61463300006700
494617067170000
77465000005000
89465005000000
Total81203
Average56.716.77.96.44.93.41.52.5
All STs
 Total1004,950
 Average00.40.71.13.4133547
  • a In order to avoid comparisons between epidemiologically related clones, for each emm type, all isolates were collected ≥1 year apart or from different continents, or isolates differed in allelic profile. All emm types listed in Table 2, of which four or more isolates meet the above-stated criteria, are included in the analysis.