Dear Dr,Husam Bakri,, Thanks for the update,, i hv few observations from my exp in Poultry ind in India
for more than 28 yrs ,,
A) IB virus belong to Corona Group & hv many variants by this time even in India
B) Chickens are very susceptible
C) spread airborne route
D) IB is triggering factors for many diseases like C.R.D which is very rampant in broiler ( commercial flock)
E) IB -virule ...