The link between international trade. animal health and epidemiology has be
en recognized for a long time and has taken an additional importance in the
aftermath of the Uruguay Round of Multilateral Trade Negotiations of the G
eneral Agreement on Tariffs and Trade (GATT) and of the inception of the Wo
rld Trade Organization. The Agreement on the Application of Sanitary and Ph
ytosanitary Measures of the World Trade Organization demands that sanitary
and phytosanitary measures be scientifically based, placing epidemiology at
the center of decisions related animal health and trade. This paper analys
es the interactions between international trade of animals (and animal prod
ucts) and epidemiology with discussion on the inputs of epidemiology in sur
veillance. risk analysis and regionalization. (C) 2001 Elsevier science B,V
. All rights reserved.