Search Results       Your search for [subject]Influenza A Virus, H5N1 Subtype -- Pathogenicity returned 1 record.           Human clinical trials for flu vaccine begin. Subject: Vaccines; Avian influenza; Influenza, Human -- Prevention & control; Influenza A Virus, H5N1 Subtype -- Pathogenicity.          Add to Book Cart Relevance: 49.56%