Leveraging Classical Virology and High Throughput Sequencing for Viral Discovery Using a Historical Viral Collection.

Area of Science:

• Virology
• Genomics
• Public Health

Background:

• Northern Australia is a significant region for arbovirus discovery.
• Historical viral collections are valuable but underutilized.
• Classical virology methods for virus discovery are declining.

Purpose of the Study:

• To re-characterize historical viral isolates from Northern Australia using next-generation sequencing.
• To identify novel arboviruses within these historical collections.
• To assess the utility of historical collections combined with modern sequencing techniques.

Main Methods:

• Sequencing of 76 historical viral isolates from the Berrimah Veterinary Laboratory.
• Utilizing next-generation sequencing to analyze viral genetic material.
• Serological typing data was used for comparison.

Main Results:

• 43 of the 76 isolates were identified as belonging to the genera Hapavirus, Orbivirus, and Orthobunyavirus.
• Several isolates represent putatively novel genotypes or potential new taxa.
• The study successfully identified viruses that had ambiguous serological typing.

Conclusions:

• Historical viral collections are a rich source for contemporary viral discovery.
• Next-generation sequencing significantly enhances the characterization of previously isolated viruses.
• Findings have implications for understanding arboviral diversity and improving disease preparedness in Northern Australia.