What is Avian Influenza? - Description and Definit

WHAT IS AVIAN INFLUENZA?

Various species of animals are capable of hosting a range of viruses.  The outbreak of H5N1 in portions of Asia and Eastern Europe has resulted in the killing of millions of birds as authorities attempt to stem the spread of the infection.  Although some human deaths have resulted from H5N1 exposure, these appear to have been caused by direct exposure to infected birds.  The greatest risk to the human population is the possible mutation of the H5N1 virus enabling transmission from person to person.  Having had no prior exposure to H5N1, the human immune system has not yet developed antibodies to destroy the virus.