This document provides the report of a joint APEC/FAO/NACA/SEMARNAP expert workshop held in Mexico, July 2000. The workshop aimed to review existing knowledge on the impacts of trans-boundary aquatic animal pathogen movement, review management strategies to control impacts, to identify potential future managemment interventions at national and international levels, to review existing knowlege on standardisation or diagnostic techniques and to develop a follow up programme for standardisation of aquaculture health management measures.