Flu virus found in birds that come from natural sources, and flu viruses found in other types of animals, usually these people can be made of involves into the spreading virus.
Voëlgriep virus gevind in baie natuurlike bronne van water. En griep virusse word in ander spesies. Dit het gewoonlik besmet nie mense kan muteer in 'n pandemie virus.
The influenza virus in birds from many natural resource water. The flu virus found in other animal species. These usually will not stick can be transitioned into the spread of the virus.