{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,22]],"date-time":"2026-03-22T00:01:57Z","timestamp":1774137717731,"version":"3.50.1"},"reference-count":142,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2023,11,30]],"date-time":"2023-11-30T00:00:00Z","timestamp":1701302400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Microbiol."],"abstract":"<jats:p>Hypervirulence and carbapenem-resistant have emerged as two distinct evolutionary pathotypes of <jats:italic>Klebsiella pneumoniae<\/jats:italic>, with both reaching their epidemic success and posing a great threat to public health. However, as the boundaries separating these two pathotypes fade, we assist a worrisome convergence in certain high-risk clones, causing hospital outbreaks and challenging every therapeutic option available. To better understand the basic biology of these pathogens, this review aimed to describe the virulence factors and their distribution worldwide among carbapenem-resistant highly virulent or hypervirulent <jats:italic>K. pneumoniae<\/jats:italic> strains, as well as to understand the interplay of these virulence strains with the carbapenemase produced and the sequence type of such strains. As we witness a shift in healthcare settings where carbapenem-resistant highly virulent or hypervirulent <jats:italic>K. pneumoniae<\/jats:italic> are beginning to emerge and replace classical <jats:italic>K. pneumoniae<\/jats:italic> strains, a better understanding of these strains is urgently needed for immediate and appropriate response.<\/jats:p>","DOI":"10.3389\/fmicb.2023.1325077","type":"journal-article","created":{"date-parts":[[2023,11,30]],"date-time":"2023-11-30T08:50:45Z","timestamp":1701334245000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":59,"title":["Virulence factors in carbapenem-resistant hypervirulent Klebsiella pneumoniae"],"prefix":"10.3389","volume":"14","author":[{"given":"Gabriel","family":"Mendes","sequence":"first","affiliation":[]},{"given":"Maria Leonor","family":"Santos","sequence":"additional","affiliation":[]},{"given":"Jo\u00e3o F.","family":"Ramalho","sequence":"additional","affiliation":[]},{"given":"Aida","family":"Duarte","sequence":"additional","affiliation":[]},{"given":"C\u00e1tia","family":"Caneiras","sequence":"additional","affiliation":[]}],"member":"1965","published-online":{"date-parts":[[2023,11,30]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","first-page":"1880","DOI":"10.3390\/microorganisms9091880","article-title":"Antimicrobial resistance and comparative genome analysis of Klebsiella pneumoniae strains isolated in Egypt","volume":"9","author":"Abdelwahab","year":"2021","journal-title":"Microorganisms"},{"key":"ref2","doi-asserted-by":"publisher","first-page":"819","DOI":"10.1038\/s41467-022-28819-2","article-title":"Role of mobile genetic elements in the global dissemination of the carbapenem resistance gene blaNDM","volume":"13","author":"Acman","year":"2022","journal-title":"Nat. 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