Khaled Mohamed Kamel <br/><br/>
Updating on the present etiological and economical situation of infectious bronchitis on chicken industry in Egypt /  
 الوضع الحالى لمسببات واقتصاديات الالتهاب الشعبى على صناعة الدواجن فى مصر 
Khaled Mohamed Kamel ; Supervised A.A.Bassiouni , Manal Afify Ali , Nagwa Saad Rabie 
 - Cairo :   Khaled Mohamed Kamel ,   2007 
 - 255Leaves :   ill. ;   30cm 
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty Of Veterinary Medicine - Department Of Animal Diseases 
<br/><br/> Since the initial description of IB in Eggypt , the disease still occurs in vaccinated and unvaccinated chicken farm.25 isolates of IBV could be isolated ; of them at least four multiple serotypes (variants) were identified.Variant strains in pathogenicity studies produced within 24 - 48 h.p.i , respiratory distress and nephritis - nephrosis associated with 20 percent - 100 percent 
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<br/><br/><label>Subjects--Index Terms: </label>Egypt Cross Protection Infectious bronchitis Vacciantion program