It has been proved that tigers could be infected by H5N1 subtype influenza virus, and TIV is the H5N1 influenza virus isolated from the lung of dead tigers.

• 虎是我国的一类濒危野生动物,H5N1 流感病毒对虎的感染已被证实,TIV 即是从病死虎肺脏中分离出的H5N1 亚型高致病性流感病毒。