Discussion: In complement to this study, we previously tested the genetic compatibility of viral segments derived from HPAI A/duck/Egypt/
Q4596D/2012 (
H5N1) (
H5N1/
Q4596D) in the genetic backbone of LPAI A/chicken/Egypt/S4456B/2011 (
H9N2) (
H9N2/S4456B) using Rg approach of influenza viruses.