The first outbreaks of highly pathogenic H5N1 viruses were reported in South East Asia in Guangdong China, since 15 years ago (Tang et al., 1998). Up to date, the virus was reported in more than 60 countries (OIE, 2010). Since then, the disease has become endemic in some Asian and African countries (Poetri et al., 2011). Influenza viruses are members ... إقراء المزيد