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Case Report Associated with Aspergillosis and Hepatitis E Virus Coinfection in Himalayan Griffons
Heng Li1, Rining Zhu1, Ruiping She1
1Laboratory of Veterinary Pathology and Public Health, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
Abstract:
This study involved a death which occurred in four Himalayan griffons housed in Beijing zoo, China. Based on pathogen identification and the pathological changes observed, we did characterize the fungi and Hepatitis E virus (HEV) in four dead Himalayan griffons. Pathological changes were severe. Membranous-like material was observed on the surface of the internal organs. Spleen was necrotic. Focal lymphocyte infiltration in the liver and many sunflower-like fungi nodules were evident in the tissues, especially in the kidney. PCR was used to identify the pathogen. Based on the 18SrRNA genomic sequence of known fungi, the results confirmed that all four dead Himalayan griffons were infected with Aspergillus. At the same time the detection of HEV also showed positive results. To the best of our knowledge, this work appears to be the first report of concurrent presence of Aspergillosis and Hepatitis E virus in rare avian species.
Insights
Four Himalayan griffons died from concurrent infections with Aspergillus fungus and Hepatitis E virus (HEV). This study details the pathological findings and pathogen identification in these rare avian deaths.
Area of Science:
- Veterinary Pathology
- Avian Medicine
- Mycology
- Virology
Background:
- Himalayan griffons are rare avian species.
- Concurrent infections can complicate diagnosis and treatment in avian species.
- Hepatitis E virus (HEV) and Aspergillus infections are known avian pathogens.
Purpose of the Study:
- To identify the causes of death in four Himalayan griffons from Beijing Zoo.
- To characterize the pathological changes associated with the identified pathogens.
- To report the first known co-infection of Aspergillosis and HEV in this species.
Main Methods:
- Necropsy and histopathological examination of tissues.
- Polymerase Chain Reaction (PCR) for pathogen identification.
- 18S rRNA gene sequencing for fungal identification.
Main Results:
- Severe pathological changes observed, including splenic necrosis and kidney fungal nodules.
- PCR confirmed the presence of Aspergillus in all four griffons.
- HEV was also detected in all affected birds.
- Concurrent Aspergillosis and HEV infection identified.
Conclusions:
- Aspergillosis and Hepatitis E virus co-infection led to the deaths of four Himalayan griffons.
- This is the first documented case of concurrent Aspergillosis and HEV in this rare avian species.
- Highlights the importance of comprehensive diagnostic approaches in avian mortality cases.
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