﻿130 The Philippine Journal of Science i9u 



In considering the results of immunization, there arises a 

 question regarding the general susceptibility to rinderpest of the 

 animals in the district where the work was carried on. In as 

 much as a very strict system of quarantine and inspection of ani- 

 mals was in force in the same province at practically the same 

 time, some data can be presented. During the period from Sep- 

 tember 20 to December 27, 1913, in the same province and in 

 almost adjoining municipalities, 94 cases of rinderpest were dis- 

 covered of which 36 died, a number corresponding to 38.3 per cent. 

 This in our experience is a moderately low death rate; we have 

 observed it to vary from 33 per cent to 100 per cent elsewhere. A 

 low death rate is generally considered to indicate a high resistance 

 of the animals to the disease or a low virulence of the strain of 

 virus harbored by the animals in the community. Therefore, with 

 regard to the death rate prevailing naturally at the time, the work 

 of immunization was conducted under favorable circumstances. 



Subsequent to the work of immunization at Laoag, extensive 

 work of the same kind for the general public has been carried 

 on at Dingras and at Solsona by Dr. J. R. Bums. 



From October 11, 1913, to January 25, 1914, 1,657 animals 

 were immunized in these municipalities, not counting 954 ani- 

 mals injected previous to this date but not completed. More 

 would have been injected during the period but for the fact 

 that 65 liters of serum have been shipped to Manila for use in 

 starting the work elsewhere. The total number of deaths 

 during immunization for the period was 23, which corresponds 

 to 1.3 per cent of the number injected. 



As the work has progressed, the expense has been materially 

 lessened. The immunization of 429 animals at Laoag cost the 

 Bureau 3,994.11 pesos, about 9 pesos per animal. The work 

 was essentially experimental in character and was conducted 

 slowly and cautiously. 



Conditions of routine field work are more closely represented 



by the work in Dingras and Solsona. For the period October 



11 to December 31, 1913, the following expenditures were made 



by the Bureau : 



October. 



Salary of 1 veterinarian, 5 days, at 333.33 pesos per Pesos. 

 month 55.55 



November and December. 



Salary of 1 veterinarian, at 333.33 pesos per month 666.67 



Wages of 10 laborers, at 20 pesos per month 400.00 



Wages of 2 laborers, at 45 pesos per month 180.00 



Expendable supplies furnished during period 123.55 



Total 1,425.77 



