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The clinical presentation of hantavirus infection closely mimics leptospirosis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Case presentation<\/jats:title><jats:p>This case report describes a previously apparently well 36-year-old Sri Lankan Sinhalese man who presented with an acute febrile illness with myalgia, with liver involvement in the form of transaminitis, cardiac involvement in the form of myocarditis, acute kidney injury, and pulmonary involvement. He was initially managed as severe leptospirosis with multiorgan dysfunction with antibiotics, steroids, and N-acetyl cysteine. A diagnosis of acute hantavirus infection was made subsequently. He made an uneventful recovery.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Hantavirus infections need to considered in the differential diagnosis of patients presenting with acute febrile illness with multiorgan involvement. Larger studies are needed to evaluate the seroprevalence of hantavirus in Sri Lanka because it could be an emerging serious public health problem.<\/jats:p><\/jats:sec>","DOI":"10.1186\/s13256-020-02417-6","type":"journal-article","created":{"date-parts":[[2020,6,17]],"date-time":"2020-06-17T23:04:08Z","timestamp":1592435048000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Atypical case of hantavirus infection in Sri Lanka mimicking leptospirosis: a case report"],"prefix":"10.1186","volume":"14","author":[{"given":"Chamara","family":"Dalugama","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Madushi","family":"Nanayakkara","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nimanthi","family":"Rathnayaka","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Arjuna","family":"Medagama","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2020,6,18]]},"reference":[{"key":"2417_CR1","doi-asserted-by":"publisher","first-page":"253","DOI":"10.1007\/978-1-4899-1364-7_10","volume-title":"The Bunyaviridae","author":"HW Lee","year":"1996","unstructured":"Lee HW. 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