 As of 2012, there was an estimated 400 million birds killed from infection of the H5N1 strain of influenza.Studies have shown that H5N1 is very well adapted to domestic duck and geese, making them key in controlling the H5N1 strain and preventing future panzootic events.Presently, the highly pathogenic Asian strain of Avian Influenza is still continuing to kill poultry and wild birds alike on panzootic scales.