Changes

==Description==

==Description==

Classical swine fevetr is a highly contagious disease of swine, caused by a Togavirus. The disease may be actue, sub-acute, chronic or persitent and is indistinguishable both clinically and pathologically in the field from African Swine Fever. The acute form is characterised by severe depression, high fever, superficial and internal haemorrhages, and high morbidity and mortality. The chronic form is characterised by anorexia, pyrxia and depression. Transplacental infection results in persistently infected piglets which constitute a major sources of virus spread in endemic situations.

 

Classical swine fever is a highly contagious, haemorrhagic disease of swine which is caused by a Togavirus. Presentation may be actue, sub-acute, chronic or persistent, and the disease is indistinguishable in the field from African Swine Fever. Acutely, classical swine fever is characterised by severe depression, high fever and superficial and internal haemorrhages, with many cases resulting in death. Depression, anorexia and pyrexia are seen in chronic classical swine fever. Transplacental infection is also possible and results in persistently infected piglets.

==Aetiology==

==Aetiology==