for example:
St101 in some artciles speak about it as a clonla group(CC) 101, other directly is a clonal complex (CG) 101.
ST14 in some artcles its finding in CC15 and CG15, but in other it seams is CC14 and CG15.
I have to others STs: 450, and 1233 that have 2 and 1 Single locus variant (SLV)) but wiothout any information about it CC and CG.
In a clonal complex the sequence types are grouped by their similarity to a central allelic profile. In a clonal group all strains carry the same sequence type (ST). However, sometimes a clonal group is defined in the same way as a clonal complex. For instance, in Neisseria sp. clonal complexes are defined as including any ST that matches the central genotype at four or more loci. If a particular strain has the same profile that defines a central allelic profile, then this ST number will at the same time both a clonal group and a clonal complex. However, this concepts are sometime specie-specifics. On the other hand, you will probably find some STs with some associated SLVs without CC assignation (You should contact the MLST curator for Kp).
http://bigsdb.web.pasteur.fr/klebsiella/klebsiella.html
Ok.n first of all thanks Daniel Yero for your answer, but your answer hasn't correlation with K. pneumoniae studies. Because for example in some article (for example: http://www.ncbi.nlm.nih.gov/pubmed/24974381) they grouped diferent clonal complex (CC17) in a big clonal group (CG23). then this part of your answer "In a clonal group all strains carry the same sequence type (ST)" isn't correct, this "However, sometimes a clonal group is defined in the same way as a clonal complex" because in this case (article) they defined a clonal group as an link of Cc17 and Cc23, right?
Indeed, you are right! In bacterial evolution there are so many errors or misconceptions. My experience is with N. meningitidis MLST (the first MLST scheme) By definition in a clonal group the isolates shared common ancestry. Then, a clonal complex is a clonal group as just as the ST is a clonal group. In your paper a group of clonal complex are named as a clonal group because they probably have a common ancestor and the CG takes de ST number of the founder CC by the eBURST analysis. The concept is in the paper (new for me) "We further defined clonal groups (CGs) of CC37, as this CC tended to merge, constituting a group of unrelated STs rather than one diversified from a single common ancestor".
if I understood well, for these authors since a CC is more clonal (all ST emerged from a central ST as SLV or DLV) and the CC37 is more diverse (but still a clonal complex), they defined CGs within the CC37. In my opinion the CC37 is the result of smaller CCs (called here CGs) connected through SLVs strains (probable due to recombination events).
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