This report summaries the proceedings of the 21st meeting of the Regional Advisory Group on Aquatic Animal Health, held 17-18 November 2022. The role of the group is to review trends in disease and emerging threats in the region, identify developments in global disease issues and standards, to evaluate the Quarterly Aquatic Animal Disease Reporting Program and to provide guidance on regional strategies to improve aquatic animal health management. The meeting discussed:

• Progress on NACA’s Asia Regional Aquatic Animal Health Program.
• Updates from the OIE Aquatic Animal Health Standards Commission.
• Aquaculture biosecurity.
• WOAH Aquatic Animal Health Strategy 2021-2025.
• Report on aquatic animal health activities of WOAH-RRAP.
• Updates on prevention and control measures on important aquatic animal diseases in China.
• Updates on regional disease reporting and disease list.
• Other matters.

Members of the Advisory Group include invited aquatic animal disease experts in the region, representatives of the World Animal Health Organisation and the Food and Agricultural Organization of the United Nations, collaborating regional organisations such as SEAFDEC Aquaculture Department and WOAH-Regional Representation in Asia and the Pacific, and the private sector.