Avian Influenza
Avian influenza is caused by type A influenza virus. The symptoms can vary from a mild disease with little or no mortality to a highly fatal, rapidly spreading epidemic (highly pathogenic avian influenza) depending on the infecting virus strain, host factors, and environmental stressors.
by Carol J. Cardona, UC Davis Veterinary Medicine Extension
US Department of Health & Human Services
from Centers for Disease Control and Prevention (CDC)
from USDA, Ag Research Service, National Ag Library, and Animal Welfare Information Center
