1. Paramoxoviral infectious diseases, Newcastle disease Flashcards
Paramoxoviral infectious diseases is caused by what viruses?
RNA viruses belonging to family Paramyxoviridae
Family Paramoxyviridae are composed of many important diseases such as
- Bovine parainfluenza virus –> respirovirus
- Canine parainfluenza –> rubulavirus
- NewCastle disease virus –> avulavirus (OIE)
- Canine distemper –> morbilivirus
- Rhinderpest –> morbilivirus (OIE)
- Peste des petits ruminant –> morbilivirus (OIE)
NewCastle disease have 3 important info to mention
Contagious, zoonotic, OIE listed
What’s the agent for causing NewCastle disease?
Avian paramyxovirus, belonging to avulavirus
What’s the susceptible host for NewCastle disease?
Birds - both wild and domestic birds
What is NewCastle disease causing?
Mainly respiratory disease but can spread to GIT and CNS
What type of transmission is their of NewCastle disease?
Horizontal - Contact with infecteed bird OR its secretion (inhalation or ingestion)
What are clinical signs to NC disease?
Respiratory signs - coughing, sneezing or gasping for air
GIT signs - diarrhea
CNS signs - ataxia, paralysis, weakness, incoordination and animal may die
How do we diagnose New Castle disease?
- By viral identification –> using viral culture
- Serological tests:
* ELISA for detection of Ab or Ag
* HA for detection of Ag
* HIT for detection of Ab
What is the treatment for New Castle disease?
NO treatment!
Can reach up to 100% mortality.
Adult birds may recover with supportive care as fluid, nutrition and medication. ATB for secondary infections can be given
How can spreading of New Castle disease be prevented?
- By taking hygiene measures (cleaning, disinfecting areas)
- Isolating infected birds
- Regular health checks
- Vaccination of young birds / chickens
