Changes

*Animal test:

*Animal test:

**Samples of trachea and gut of 20 birds are tested in eggs

**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|avian influenza]]

**'''HI''' using anti-NDV serum (to differentiate '''HA''' caused by [[Avian Influenza]]

**Virulence of isolate tested by the speed it kills chicks

**Virulence of isolate tested by the speed it kills chicks

*DNA test (which will soon replace the animal test):

*DNA test (which will soon replace the animal test):

**Sequencing the cleavage site of H gene

**Sequencing the cleavage site of H gene

**The more basic amino acids the more virulent the virus

**The more basic amino acids the more virulent the virus

====Control====

====Control====

*Newcastle Disease is '''NOTIFIABLE'''

*Newcastle Disease is '''NOTIFIABLE'''