{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,17]],"date-time":"2026-04-17T03:42:22Z","timestamp":1776397342043,"version":"3.51.2"},"reference-count":60,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2025,7,25]],"date-time":"2025-07-25T00:00:00Z","timestamp":1753401600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["TropicalMed"],"abstract":"<jats:p>Introduction: Leptospirosis is an under-recognized zoonosis that affects both tropical and temperate regions. While it is often associated with exposure to contaminated water or infected animals, its presentation and epidemiology in Mediterranean countries remain incompletely understood. This retrospective cohort study investigates the clinical and epidemiological profile of leptospirosis in Crete, Greece, a region where data are scarce. Methods: All adult patients with laboratory-confirmed leptospirosis admitted to three major public hospitals in Crete, Greece, between January 2019 and December 2023 were included in the analysis. Diagnosis was made through serologic testing along with compatible clinical symptoms. Results: A total of 17 patients were included. Their median age was 48 years, with a predominance of males (70.6%). Notably, more than half of the patients had no documented exposure to classic risk factors such as rodents or standing water. Clinical presentations were varied but commonly included fever, fatigue, acute kidney injury, and jaundice. Of the patients who underwent imaging, most showed hepatomegaly. The median delay from symptom onset to diagnosis was 11 days, underscoring the diagnostic challenge in non-endemic areas. Ceftriaxone was the most frequently administered antibiotic (76.5%), often in combination with tetracyclines or quinolones. Despite treatment, three patients (17.6%) died, all presenting with severe manifestations such as ARDS, liver failure, or shock. A concerning increase in cases was noted in 2023. Conclusions: Leptospirosis can present with severe and potentially fatal outcomes even in previously healthy individuals and in regions not traditionally considered endemic. The relatively high mortality and disease frequency noted emphasize the importance of maintaining a high index of suspicion. Timely diagnosis and appropriate antimicrobial therapy are essential to improving patient outcomes. Additionally, the need for enhanced public health awareness, diagnostic capacity, and possibly environmental surveillance to control this neglected but impactful disease better, should be emphasized.<\/jats:p>","DOI":"10.3390\/tropicalmed10080209","type":"journal-article","created":{"date-parts":[[2025,7,25]],"date-time":"2025-07-25T16:06:17Z","timestamp":1753459577000},"page":"209","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["A Retrospective Cohort Study of Leptospirosis in Crete, Greece"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1082-5674","authenticated-orcid":false,"given":"Petros","family":"Ioannou","sequence":"first","affiliation":[{"name":"School of Medicine, University of Crete, 71003 Heraklion, Greece"},{"name":"Internal Medicine Department, University Hospital of Heraklion, 71110 Heraklion, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria","family":"Pendondgis","sequence":"additional","affiliation":[{"name":"Internal Medicine Department, University Hospital of Heraklion, 71110 Heraklion, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eleni","family":"Kampanieri","sequence":"additional","affiliation":[{"name":"Internal Medicine Department, General Hospital of Chania, 73300 Chania, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-6443-548X","authenticated-orcid":false,"given":"Stergos","family":"Koukias","sequence":"additional","affiliation":[{"name":"Internal Medicine Department, Venizeleio General Hospital, 71409 Heraklion, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria","family":"Gorgomyti","sequence":"additional","affiliation":[{"name":"Clinical Microbiology Department, University Hospital of Heraklion, 71110 Heraklion, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-5148-0621","authenticated-orcid":false,"given":"Kyriaki","family":"Tryfinopoulou","sequence":"additional","affiliation":[{"name":"School of Medicine, University of Crete, 71003 Heraklion, Greece"},{"name":"Clinical Microbiology Department, University Hospital of Heraklion, 71110 Heraklion, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0255-5926","authenticated-orcid":false,"given":"Diamantis","family":"Kofteridis","sequence":"additional","affiliation":[{"name":"School of Medicine, University of Crete, 71003 Heraklion, Greece"},{"name":"Internal Medicine Department, University Hospital of Heraklion, 71110 Heraklion, Greece"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,7,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"835","DOI":"10.1007\/s10096-019-03797-4","article-title":"Leptospirosis: A Neglected Tropical Zoonotic Infection of Public Health Importance\u2014An Updated Review","volume":"39","author":"Karpagam","year":"2020","journal-title":"Eur. 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