Search This Blog

Tuesday, August 31, 2010

More description on Newcastle Disease

I've just posted a news report with regards to the Newcastle Disease outbreak in Mongolia (see below). Here's more information on the disease from OIE :


Classification of the causative agent

Virus family Paramyxoviridae, genus Rubulavirus

Temperature: Inactivated by 56°C/3 hours, 60°C/30 min
pH: Inactivated by acid pH
Chemicals: Ether sensitive
Disinfectants: Inactivated by formalin and phenol
Survival: Survives for long periods at ambient temperature, especially in faeces



- Many species of birds, both domestic and wild
- The mortality and morbidity rates vary among species, and with the strain of virus
- Chickens are the most susceptible poultry, ducks and geese are the least susceptible poultry
- A carrier state may exist in psittacine and some other wild birds


- Direct contact with secretions, especially faeces, from infected birds
- Contaminated feed, water, implements, premises, human clothing, etc.

Sources of virus

- Respiratory discharges, faeces
- All parts of the carcass
- Virus is shed during the incubation period and for a limited period during convalescence
- Some psittacine birds have been demonstrated to shed ND virus intermittently for over 1 year


Newcastle disease is endemic in many countries of the world. Some European countries have been free of the disease for years

For detailed information on occurrence, see recent issues of World Animal Health and the OIE Bulletin"

No comments:

Post a Comment