Bird flu is the popular name for the illness caused by the H5N1 virus, one of hundreds of types of avian influenza viruses. Many wild birds carry flu viruses that cause them no illness. These viruses sometimes mix and exchange genes, creating new strains. One group rapidly kills domestic chickens...
Facts About Bird Flu
Bird flu is the popular name for the illness caused by the H5N1 virus, one of hundreds of types of avian influenza viruses. Many wild birds carry flu viruses that cause them no illness. These viruses sometimes mix and exchange genes, creating new strains. One group rapidly kills domestic chickens...