Novel adenovirus associated with necrotizing bronchiolitis in a captive reindeer (Rangifer tarandus)
2022
Dastjerdi, Akbar | Jeckel, Sonja | Davies, Hannah | Irving, Jennifer | Longue, Camille | Plummer, Charlotte | Vidovszky, Márton Z. | Harrach, Balázs | Chantrey, Julian | Martineau, Henny | Williams, Jonathan
Adenoviruses cause a range of major diseases across many diverse animal species including ruminants. They are classified into six genera in the family Adenoviridae. In deer species, two adenoviruses are currently recognized: deer adenovirus 1 in the Atadenovirus genus, and deer adenovirus 2 in the Mastadenovirus genus. Deer adenovirus 1 causes adenovirus haemorrhagic disease with high fatality in black‐tailed and mule deer in North America. Conversely, deer adenovirus 2 was incidentally detected from a healthy white‐tailed deer fawn, but experimentally it has been shown to cause pyrexia, cough and moderate to severe haemorrhage. Here, we detected a novel adenovirus, reindeer adenovirus 1, from lung lesions of a 5‐year‐old male reindeer (Rangifer tarandus). This animal presented with aspiration pneumonia and necrotizing bronchiolitis following a period of clinical weakness, nasal discharge and wasting. Histopathological examination of the lung revealed large intranuclear basophilic inclusions associated with the areas of necrotizing bronchiolitis. Next generation sequencing of the lung tissue identified a novel mastadenovirus with close similarity to deer adenovirus 2 and bovine adenovirus 3. To our knowledge, this is the first report of a deer mastadenovirus associated with necrotizing bronchiolitis in captive reindeer.
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