Event Title First Global Alliance for Research on Avian Diseases (GARAD) Conference
Session Title Unknown
Event Date & Time On Mon, 29 Jun 2015 at 10:00:00 - 10:25:00
Venue Edmond J. Safra Lecture Theatre
Abstract Title New and reemerging challenges for the detection and control of avian influenza (Ian Brown)
Authors Ian Brown
Affiliations Animal Health and Veterinary Laboratories Agency, UK
Abstract Content

HPAI. Furthermore this group of viruses have undergone significant antigenetic evolution in recent years. These viruses have remained endemic in several regions whilst in others sustained eradication has been possible. A variety of control methods have been used with an increasing number of countries using vaccination as a single or multiple component where stamping out alone has not proved practical. Multiple clades of H5 HPAI continue to co-circulate and evolve in poultry populations. In the last twelve months there have been developments on a global scale not previously seen. H5N1 virus has re-emerged in central Asia, West Africa and Eastern Europe. However, by far the greatest development of global significance has been the emergence of clade 2.3.4.4 viruses which have spread globally within Asia, Europe and for the first time in North America. All these events have revealed significant virus reassortment within the H5 HPAI Eurasian family. Incursion is postulated to have occurred initially via infected migratory waterfowl but the spread and transmission within poultry has most likely occurred through multiple pathways. This presents significant new challenges for the future since the basis for prevention of HPAI infection is through strong biosecurity. Other AI viruses continue to emerge and circulate including LPAI viruses for poultry; H7N9 in China in poultry and humans since 2013 is noteworthy. The challenges for the detection and control of AI in the animal sector will be presented and discussed.