This study states that From the mid-1980s, an expanding number of reports from the Asian Pacific edge, specifically Taiwan, portrayed a flood in local area gained liver abscesses. The sores were monomicrobial and the mindful microbe was distinguished as Klebsiella pneumoniae. Characterizing clinical and phenotypic attributes proclaimed the rise of a particular variation  that has advanced from ‘traditional’ K. pneumoniae strains, and is named ‘hypervirulent Klebsiella pneumoniae’ (hvKp). Advances in genomic examination uncovered that drug-safe K. pneumoniae are profoundly hereditarily different, regularly going through chromosomal recombination and plasmid procurement, though hvKp strains show lower quality substance variety and restricted quality securing . Singular strains shift in their harmfulness potential because of the presence of portable frill qualities. Most of K. pneumoniae clones discovered to be hypervirulent convey harmfulness plasmids encoding aerobactin siderophore biosynthesis (iucA), controller of mucoid aggregate A (rmpA) , and the putative metabolite carrier peg344 . The three genotypic markers, iucA, rmpA and peg344 loci are generally assembled on a huge harmfulness plasmid, albeit hereditary variety of the plasmid has been noticed. Clinical exploration has progressively utilized genotypic markers to immediately evaluate for key destructiveness qualities as a more solid identifier of hypervirulence.
Reference link- https://www.sciencedirect.com/science/article/pii/S1198743X20302895