Update: AVIAN INFLUENZA Low Pathogenic H5N1 vs. Highly Pathogenic

Update: AVIAN INFLUENZA Low Pathogenic H5N1 vs. Highly Pathogenic: "There are two types of avian influenza (AI) that are identified as H5N1. A difference exists in the virus classification; one is low pathogenic (LPAI) and the other is highly pathogenic (HPAI). Pathogenicity refers to the ability of the virus to produce disease"