510 VETEEINAEY HYGIENE 



The stamping out of Foot and Mouth Disease must be 

 carried out in all congested countries by means of destruc- 

 tion. Nothing must be left alive capable of conveying the 

 disease, and if dogs and other smaller animals cannot be 

 kept under control, they had better be destroyed. 



Everything in contact with the sick, and all their evacua- 

 tions are highly infective ; these must be destroyed by fire. 

 The attendants, butchers, etc., must be suitably attired for 

 their work on the farm, and all clothes and boots must be 

 left behind for destruction or disinfection ; all persons before 

 leaving an infected farm must be thoroughly disinfected. 

 On no account should swine be neglected, they are liable 

 to the disease and should be confined to their styes or 

 destroyed. 



The usual two zones constituting the affected area must 

 at once be established, and all movements both in this and 

 the affected district suspended. The area for Foot and 

 Mouth Disease must be made exceptionally large, small 

 areas are useless. Further, the embargo on all move- 

 ments must be maintained for some time after the affected 

 animal is destroyed. 



The virus is known to have a vitality of about eighteen 

 days outside the body, and it is easy to understand how it 

 may be carried on the hoofs of animals for considerable 

 distances before it becomes inert. 



In the Annual Eeport of the Board of Agriculture for 

 1899, it is stated that some of the expert advisers of the 

 French Government consider that the virus may retain its 

 virulence for several months in sheds which are not dis- 

 infected. 



Lymph from a vesicle kept in a capillary tube has been 

 found active after three weeks, and kept in an ice-chest was 

 virulent after three months. 



Cattle houses, straw yards, and pastures are infected not 

 only from the excreta, but also from the saliva ; straw 

 yards and pastures, owing to the difficulty of disinfection, 

 must be given a considerable period before being again 

 occupied, not less than three months, and if possible 



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