FOOT AND MOUTH DISEASE 69 



such as for hound puppies or in any condition where 

 a number of 3'Oung dogs are liable to congregate ; for 

 even though actual protection will not be afforded, 

 should the animal get the disease, it generally does 

 so in a mild form if the serum or vaccine has been 

 previously employed. 



Foot and Mouth Disease. — In the British Isles 

 this is a scheduled disease, therefore it is not allowed 

 to be treated. 



Etiology, — An ultra-visible virus. This disease is 

 highly contagious, and attacks bovines, sheep, goats, 

 swine, deer, and occasionally horses, dogs and man. 

 In countries outside the British Isles this disease is 

 treated, but so far no serum or vaccine has been pre- 

 pared which can be relied upon to give immunity. 

 Recovery from the disease gives active immunity for 

 indefinite periods corresponding with the severity of 

 the attack. In countries where the disease is more 

 or less constant, immunisation is accomplished by 

 the deliberate production of the disease ; the im- 

 munity so produced, as a rule, lasts for a long time. 



Cattle Plag'ue or Rinderpest. — In the British 

 Isles this is a scheduled disease. 



Etiology. — An ultra-visible virus. The disease is 

 chiefly confined to cattle, rarely occurring in goats 

 and sheep. 



Iminunity. — Animals which recover spontaneously 

 from the disease are highly immune, and the blood 



