Avian (bird) flu comes from birds before it goes on to infect humans. It is caught by contact with birds. Everything else about it is similar to the descriptions of the other influenza but it is more severe.
Attribution: Avallain
Avian (bird) flu comes from birds before it goes on to infect humans. It is caught by contact with birds. Everything else about it is similar to the descriptions of the other influenza but it is more severe.
Attribution: Avallain