The H5N1 strain was first discovered in Hong Kong in 1997 and has spread to the rest of Asia, Europe and Africa through birds.
H5N1 yo wanala kha ḽa Hong Kong nga 1997, uya nga ha vha mutakalo wa zwipuka, ya phaḓalala ubva Asia uya Europe na kha ḽa Afrika nga nwaha wa 2003.