The study analyzed 148 Klebsiella pneumoniae strains from patients in Moscow hospitals between 2012-2016, finding that 98% were multidrug resistant and carried various beta-lactamase genes.
It identified 15% of strains with a hypermucoviscous (HV) phenotype and detected the rmpA gene related to this phenotype in 24% of strains, indicating potential for increased virulence.
A new hypervirulent strain of K. pneumoniae (KPB2580-14) was reported, which carries genes for extended-spectrum beta-lactamase and carbapenemase, showing significant resistance to common antibiotics.