82 Dairy Bacteriology. 



80. Other diseases. There are a number of other bo - 

 vine diseases such as anthrax, 1 lockjaw, 2 and hydrophobia 

 in which it has been asserted that the virus of the disease is 

 transmissible to man, but in most cases of these diseases 

 the secretion of the udder soon becomes affected, so that 

 no danger need be apprehended unless such milks are 

 wilfully sold for human food. The only safe rule is to 

 reject milk coming from animals that show any signs of 

 sickness, even though the disease may be one that is not 

 common to man. 



B. INFECTION OF MILK BY DISEASE BACTERIA AFTER 

 IT IS DRAWN. 



81. Typhoid Fever. This disease stands next to 

 tuberculosis in importance in its relation to milk. The 

 organism producing this fever does not develop in the 

 animal itself, consequently, no danger need be appre- 

 hended from milk, if it is properly cared for after it comes 

 from the cow. The typhoid fever bacillus, however, 

 finds in raw milk such favorable conditions for develop- 

 ment, that if it is once introduced, it is often able to 

 thrive for a considerable length of time. The disease 

 usually spreads by means of the water-supply, yet a large 

 number of epidemics have been traced directly to milk as 

 the original and only source of infection. A striking 

 case is the Stamford, Conn., epidemic of 1895. 386 

 cases of the disease developed in six weeks, and of this 

 number, over 97% came from a single milk-supply. The 

 milk was infected by rinsing out the cans with water 

 from a shallow contaminated well. 



The contamination of milk by this disease has been 



1 Stohmann, Milch u. Molk. produkte, p. 382. 



2 Marx, Deutsche Viertelsjahr. f. offentl. Gesunds. Pflege, 20: 444, 

 1890. 



