Changes

[[Image:Newcastle Disease.jpg|150px|thumb|right|''Newcastle Disease'' <br> L. Mahin, Wikimedia Commons]]

[[Image:Newcastle Disease.jpg|150px|thumb|right|''Newcastle Disease'' <br> L. Mahin, Wikimedia Commons]]

====Hosts====

==Hosts==

Gallinaceous birds, pigeons, parrots, finches

Gallinaceous birds, pigeons, parrots, finches

Subclinical carriers: ducks, ostriches

Subclinical carriers: ducks, ostriches

====Pathogenesis====

==Pathogenesis==

Transmission via aerosol and direct contact

Transmission via aerosol and direct contact

Disease ranges from subclinical respiratory tract infections -> torticollis -> haemorrhages and death

Disease ranges from subclinical respiratory tract infections -> torticollis -> haemorrhages and death

====Diagnosis====

==Diagnosis==

Two diagnostic tests currently exist:

Two diagnostic tests currently exist:

Animal test:

Animal test:

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'''

*Vaccination of chickens and racing pigeons

*Vaccination of chickens and racing pigeons