Difference between revisions of "Newcastle Disease Virus"
Jump to navigation
Jump to search
(New page: {{toplink |linkpage = Paramyxoviridae |linktext = PARAMYXOVIRIDAE |pagetype=Bugs }} <br> ====Hosts==== *Gallinaceous birds, pigeons, parrots, finches *Subclinical carriers: ducks, ostric...) |
|||
| Line 2: | Line 2: | ||
|linkpage = Paramyxoviridae | |linkpage = Paramyxoviridae | ||
|linktext = PARAMYXOVIRIDAE | |linktext = PARAMYXOVIRIDAE | ||
| + | |pagetype=Bugs | ||
| + | }} | ||
| + | <br> | ||
| + | {{toplink | ||
| + | |linkpage =Viruses | ||
| + | |linktext =VIRUSES | ||
|pagetype=Bugs | |pagetype=Bugs | ||
}} | }} | ||
Revision as of 18:27, 13 October 2008
|
|
Hosts
- Gallinaceous birds, pigeons, parrots, finches
- Subclinical carriers: ducks, ostriches
- Causes conjunctivitis in humans
Pathogenesis
- Transmission via aerosol and direct contact
- Disease ranges from subclinical respiratory tract infections -> torticollis -> haemorrhages and death
Diagnosis
Two diagnostic tests currently exist:
- Animal test:
- Samples of trachea and gut of 20 birds are tested in eggs
- HI using anti-NDV serum (to differentiate HA caused by avian influenza
- Virulence of isolate tested by the speed it kills chicks
- DNA test (which will soon replace the animal test):
- Sequencing the cleavage site of H gene
- The more basic amino acids the more virulent the virus
Control
- Newcastle Disease is NOTIFIABLE
- Vaccination of chickens and racing pigeons
- Surveillance of imported exotic birds
- Isolation of infected stock
- Infected premises to be culled and firebreak cull if spread