Phylogenetic tree of studied sequences with geographical strains of serotype 2 generated by neighbor-joining method. The tree is based on C-prM regions (nt194-522, 329 bp) of the selected strains. Each geographical strain is abbreviated by its accession number followed by country and year of isolation.
Fatima et al. BMC Microbiology 2011 11:200 doi:10.1186/1471-2180-11-200