date:Mar 26, 2018
ducks infected with HPAI A（H5N8） seemed to be decreasing, based on reports from Bulgaria.However, HPAI A（H5N8） is still present in Europe and is widespread in neighbouring areas. The majority of mortality events of wild birds from HPAIV A（H5） in this three-month period involved single birds. This indicates that the investigation of events involving single dead birds of target species is important for comprehensive passive surveillance for HPAI A（H5）。 Moreover, 20 low pathogenic avian i