Utilizing Molecular Epidemiology and Citizen Science for the Surveillance of Lagoviruses in Australia.

Publisher: MDPI Country of Publication: Switzerland NLM ID: 101509722 Publication Model: Electronic Cited Medium: Internet ISSN: 1999-4915 (Electronic) Linking ISSN: 19994915 NLM ISO Abbreviation: Viruses Subsets: MEDLINE

Original Publication: Basel, Switzerland : MDPI

Hemorrhagic Disease Virus, Rabbit*/genetics ; Citizen Science* ; Caliciviridae Infections* ; Lagovirus*/genetics; Animals ; Rabbits ; Molecular Epidemiology ; Phylogeny ; Australia/epidemiology

Australia has multiple lagoviruses with differing pathogenicity. The circulation of these viruses was traditionally determined through opportunistic sampling events. In the lead up to the nationwide release of RHDVa-K5 (GI.1aP-GI.1a) in 2017, an existing citizen science program, RabbitScan, was augmented to allow members of the public to submit samples collected from dead leporids for lagovirus testing. This study describes the information obtained from the increased number of leporid samples received between 2015 and 2022 and focuses on the recent epidemiological interactions and evolutionary trajectory of circulating lagoviruses in Australia between October 2020 and December 2022. A total of 2771 samples were tested from January 2015 to December 2022, of which 1643 were lagovirus-positive. Notable changes in the distribution of lagovirus variants were observed, predominantly in Western Australia, where RHDV2-4c (GI.4cP-GI.2) was detected again in 2021 after initially being reported to be present in 2018. Interestingly, we found evidence that the deliberately released RHDVa-K5 was able to establish and circulate in wild rabbit populations in WA. Overall, the incorporation of citizen science approaches proved to be a cost-efficient method to increase the sampling area and enable an in-depth analysis of lagovirus distribution, genetic diversity, and interactions. The maintenance of such programs is essential to enable continued investigations of the critical parameters affecting the biocontrol of feral rabbit populations in Australia, as well as to enable the detection of any potential future incursions.

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P01-B-002 Centre for Invasive Species Solution

Keywords: RHDV; calicivirus; citizen science; molecular epidemiology

Date Created: 20231223 Date Completed: 20231225 Latest Revision: 20240524

20240524

PMC10747141

10.3390/v15122348

38140589