{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T17:05:11Z","timestamp":1789578311609,"version":"build-2803163510"},"reference-count":48,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2021,10,20]],"date-time":"2021-10-20T00:00:00Z","timestamp":1634688000000},"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. Cell. Infect. Microbiol."],"abstract":"<jats:p><jats:italic>Listeria monocytogenes<\/jats:italic> (<jats:italic>Lm<\/jats:italic>) is a foodborne pathogen causing listeriosis. Invasive forms of the disease mainly manifest as septicaemia, meningitis and maternal-neonatal infections. <jats:italic>Lm<\/jats:italic>-associated respiratory infections are very rare and little known. We reported two <jats:italic>Lm<\/jats:italic> respiratory infection cases occurred in Central Italy during the summer of 2020, in the midst of the SARS-CoV2 pandemic. In addition to collect the epidemiological and clinical characteristics of the patients, we used Whole Genome Sequencing to study the genomes of the <jats:italic>Lm<\/jats:italic> isolates investigating their virulence and antimicrobial profiles and the presence of genetic mobile elements. Both the strains belonged to hypervirulent MLST clonal complexes (CC). In addition to the Listeria Pathogenicity Island 1 (LIPI-1), the CC1 strain also carried LIPI-3 and the CC4 both LIPI-3 and LIPI-4. Genetic determinants for antimicrobial and disinfectants resistance were found. The CC1 genome presented prophage sequences but they did not interrupt the <jats:italic>comK<\/jats:italic> gene, involved in the phagosomal escape of <jats:italic>Lm<\/jats:italic>. None of the strains carried plasmids. <jats:italic>Lm<\/jats:italic> is an important, although rare, opportunistic pathogen for respiratory tract and lung infections. To avoid dangerous diagnostic delays of these severe clinical forms, it is important to sensitize hospital laboratories to this rare manifestation of listeriosis considering <jats:italic>Lm<\/jats:italic> in the differential diagnosis of respiratory infections.<\/jats:p>","DOI":"10.3389\/fcimb.2021.765540","type":"journal-article","created":{"date-parts":[[2021,10,20]],"date-time":"2021-10-20T23:26:31Z","timestamp":1634772391000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":14,"title":["Hyper-Virulent Listeria monocytogenes Strains Associated With Respiratory Infections in Central Italy"],"prefix":"10.3389","volume":"11","author":[{"given":"Fabrizia","family":"Guidi","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexandra","family":"Chiaverini","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Antonella","family":"Repetto","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cinzia","family":"Lorenzetti","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gabriella","family":"Centorotola","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Viviana","family":"Bazzucchi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Barbara","family":"Palombo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Antonietta","family":"Gattuso","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francesco","family":"Pomilio","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giuliana","family":"Blasi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2021,10,20]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"W16","DOI":"10.1093\/nar\/gkw387","article-title":"PHASTER: A Better, Faster Version of the PHAST Phage Search Tool","volume":"44","author":"Arndt","year":"2016","journal-title":"Nucleic Acids Res."},{"key":"B2","doi-asserted-by":"publisher","first-page":"455","DOI":"10.1089\/cmb.2012.0021","article-title":"SPAdes: A New Genome Assembly Algorithm and Its Applications to Single-Cell Sequencing","volume":"19","author":"Bankevich","year":"2012","journal-title":"J. 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