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What makes this case unique is the demonstration of characteristic inclusion bodies in the histology specimen and the positive PCR test for varicella DNA, which substantiated the diagnosis and elucidated the possibility of long-term viral persistence. This case highlights the importance of considering viral infections like varicella as a potential cause of unexplained interstitial lung disease in previously affected individuals.<\/jats:p>","DOI":"10.1136\/bcr-2025-269565","type":"journal-article","created":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T05:05:14Z","timestamp":1772255114000},"page":"e269565","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Post Varicella lung fibrosis: a lingering scar of viral pneumonia"],"prefix":"10.1136","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-2211-6729","authenticated-orcid":false,"given":"Lakshmi","family":"S","sequence":"first","affiliation":[{"name":"Department of Pulmonary Medicine, All India Institute of Medical Sciences - Jodhpur, Jodhpur, Rajasthan, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nishant Kumar","family":"Chauhan","sequence":"additional","affiliation":[{"name":"Department of Pulmonary Medicine, All India Institute of Medical Sciences - Jodhpur, Jodhpur, Rajasthan, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ravisekhar","family":"Gadepalli","sequence":"additional","affiliation":[{"name":"Department of Microbiology, All India Institute of Medical Sciences Jodhpur, Jodhpur, Rajasthan, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sudeep","family":"Khera","sequence":"additional","affiliation":[{"name":"Department of Pathology, All India Institute of Medical Sciences Jodhpur, Jodhpur, India"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2026,2,27]]},"reference":[{"key":"2026022721050780000_19.2.e269565.1","doi-asserted-by":"crossref","DOI":"10.1186\/s12879-025-11015-0","article-title":"Disseminated chickenpox with multi-organ failure in an immunocompetent adult. a case report and literature review","volume":"25","author":"Akram","year":"2025","journal-title":"BMC Infect Dis"},{"key":"2026022721050780000_19.2.e269565.2","unstructured":"Mandell, Douglas, and Bennett\u2019s principles and practice of infectious diseases. 8th edn. 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Inclusion bodies and their relationship to viruses. In: Doerr R , Hallauer C , Burnet FM , et al , eds. Handbuch der Virusforschung. Berlin Heidelberg: Springer, 1938: 292\u2013368. 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