Abstract
Currently we witness the emergence of viral diseases as never reported before. At thispoint, we had follow new epidemic in birds with the recent discovery of subtypes of avian influenzavirus (AIV) H5N2, H5N8 and also recombinant H5N1 of highly pathogenic (HPAI) in Washingtonin the United States, detected in wild and domestic birds. These viruses initially infected wild birds,and after rea…