cheapbag214s
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 Posted: Sat 21:35, 24 Aug 2013 Post subject: Newcastle Disease |
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Newcastle Disease,[link widoczny dla zalogowanych]
Newcastle DiseaseNewcastle disease is a highly contagious disease of birds caused by a para-myxo virus. Birds affected by this disease are fowls,[link widoczny dla zalogowanych], turkeys,[link widoczny dla zalogowanych], geese,[link widoczny dla zalogowanych], ducks,[link widoczny dla zalogowanych], pheasants,[link widoczny dla zalogowanych], guinea fowl and other wild and captive birds,[link widoczny dla zalogowanych], including ratites such ostriches,[link widoczny dla zalogowanych], emus and rhea.
The disease is transmitted through infected birds' droppings and secretions from the nose,[link widoczny dla zalogowanych], mouth,[link widoczny dla zalogowanych], and eyes. The disease is spread primarily through direct contact between healthy birds and the bodily discharges of infected birds. Virus-bearing material can also be picked up on shoes and clothing and carried from an infected flock to a healthy one.
Possible routes of transmission therefore include contact between poultry and also through movements of contaminated vehicles, equipment, manure,[link widoczny dla zalogowanych], feed and water.
The virus can survive for several weeks in a warm and humid environment on birds' feathers,[link widoczny dla zalogowanych], manure,[link widoczny dla zalogowanych], and other materials.
Effective vaccines are available and some poultry are vaccinated routinely,[link widoczny dla zalogowanych].
Current SituationIn Great Britain,[link widoczny dla zalogowanych], isolated cases of this disease were first reported in the 1930s. From 1947 outbreaks occurred here over the next 30 years, and there were further isolated cases in 1984 and 1996-7.
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