South Asian Journal of Research in Microbiology

In an era marked by remarkable advancements in medicine, the persistent emergence of high-level antibiotic resistance in Klebsiella pneumoniae poses a critical threat to public health globally. As the worldwide spread of extensively drug-resistant (XDR) and pan-drug-resistant (PDR) K. pneumoniae strains continues to grow, a significant shift in how we approach treatment is on the horizon. The complex interaction of genetic factors, which encompasses a wide range of beta-lactamases, aminoglycoside-modifying enzymes, and chromosomal mutations, creates a dynamic resistance mechanism that counters the effects of antibiotics. These intricate adaptations, arising from both gene transfers facilitated by plasmids and changes in the genome itself, present a challenging obstacle to our efforts in managing antimicrobial effectiveness. Klebsiella infections come back stronger armed with molecular tactics that challenge healthcare systems, prolong hospital stays, and increase mortality. Beyond healthcare settings, the economic and social dimensions grow as resources are redirected, intensifying the impact on vulnerable groups. This review delves into the intricate mechanisms behind the high-level antibiotic resistance in K. pneumoniae, examining its epidemiological, molecular, and clinical facets. Highlighting the necessity for coordinated research, medical protocols, and policies, the review underscores the importance of judicious antibiotic utilization, drug innovation, and rigorous infection management.