Author, Donkey, Bureaucrats, Administrators
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→Newcastle Disease Virus (NDV)
**Disease ranges from subclinical [[Viral infections|respiratory tract infections]] -> torticollis -> haemorrhages and death
**Disease ranges from subclinical [[Viral infections|respiratory tract infections]] -> torticollis -> haemorrhages and death
*'''Epidemiology'''
**Air-born
**Direct contact of poultry
*'''Diagnosis'''
**Samples of trachea and gut of 20 birds are tested in eggs
**'''HI''' using anti-NDV serum (to differentiate '''HA''' caused by [[Orthomyxoviridae|avian influenza]]
**Animal test: virulence of isolate tested by the speed it kills chicks
**Sequencing the cleavage site of [[Paramyxoviridae#Structure|H]] gene
***The more basic amino acids the more virulent the virus
***Now replacing the animal test