552 VETEEINAEY HYGIENE 



few days, recovery is prompt and complete, but a small 

 proportion of the cases become unthrifty and die suddenly 

 a few weeks later from verrucose endocarditis ; the vegeta- 

 tions on the valves contain the organism of the disease.* 



The disease though not very prevalent is perfectly well 

 known in Great Britain ; it is not included under the 

 Diseases of Animals Act. Outbreaks can be dealt with on 

 ordinary hygienic principles, viz., the separation of the 

 sick from the healthy, and thorough disinfection of the 

 affected surroundings on the lines laid down for swine 

 fever ; while the healthy may be immunized by any of the 

 following methods : 



1. Pasteur's method, which consists of inoculation with 

 a vaccine that has been passed through rabbits, and a 

 second vaccination twelve days later with a vaccine passed 

 through pigeons and subsequently cultivated in broth. 



2. Lorenz's method of simultaneous inoculation with 

 serum in the region of one ear, and a culture of the virus 

 into the same region on the opposite side. 



3. Leclainche's method, whereby the serum and culture 

 are mixed at the time of inoculation, and after an interval 

 of twelve days an inoculation with a pure culture made. 



SWINE PLAGUE. 



This disease is only noticed here as it has been confused 

 with swine fever. It appears to be very prevalent in 

 Germany and some other Continental countries, but as a 

 contagious disease of swine it is unknown in Great Britain. 

 The disease is caused by a small bacterium, and its most 

 constant lesion is pneumonia. 



GLANDERS. 



The animal plagues discussed in previous sections are 

 remarkable for their highly infective nature, and the 

 rapidity with which they spread over a large area, and 

 * Eeport of Swine Fever Committee, idem, vol. viii., 1807. 



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