Table 2

Number of types and diversity of the isolates when characterized by each typing method

Typing methodAll isolates (n = 898)Isolates characterized by MLST (n = 440)
No. of types foundSID (CI95)No. of types foundSID (CI95)
Serotype90.793 (0.781–0.805)90.777 (0.755–0.798)
alp locus60.697 (0.682–0.712)60.687 (0.664–0.711)
PI combination40.630 (0.614–0.646)40.653 (0.638–0.668)
PFGE (80%)a880.906 (0.895–0.918)670.915 (0.900–0.929)
MLST540.894 (0.878–0.910)
  • a PFGE clusters were defined as groups of isolates with ≥80% relatedness on the dendrogram.