Abalone Viral Ganglioneuritis (HaHv-1; AVG) devastated the Central and Western Zone Abalone Fisheries in Victoria, most notably from 2006-2010. The Victorian Western Zone Abalone Fishery is adjacent to the Southern Zone Abalone Fishery in South Australia. The South Australian Abalone Fishery was characterised by a long history of conservative extraction, very high abalone abundances on contiguous reef, and sensible spatial management with area-specific minimum legal sizes and catch limits. In February 2024, sick and dying abalone were reported by a commercial fisher near Port MacDonnell in the South East region of South Australia, within this Southern Zone Abalone Fishery (SZAF) management area. Samples were collected, and HaHv-1 was detected in abalone by PCR testing. Within 12 months, very high levels of mortality approaching 95% and across all size classes in many areas had occurred in the SZAF, and the SZAF was closed to all commercial and recreational fishing from March 2025. Presently (April 2025), there is no evidence of AVG in farmed or wild abalone stocks in the CZAF and WZAF, and strategies are implemented to reduce the likelihood of further spread. This talk will summarise the SZAF prior to AVG, provide a timeline of events from detection to fishery closure, and highlight the steps being taken to reduce the likelihood of spread elsewhere in SA.