112 MILK HYGIENE 



jected to a far more searching examination before they 

 can be identified as typhoid bacilli. 27 It is unnecessary to 

 pursue this subject further, since the demonstration of 

 the typhoid bacillus in market milk is not, as yet, a prac- 

 ticable procedure in milk inspection. 



Jensen's investigations have shown that there are 

 several kinds of typhoid bacilli, distinguished from each 

 other by a somewhat different fermentative power. It 

 appears to be possible that by means of cultures from 

 different patients one may determine what cases of 

 typhoid belong to one and the same epidemic. 



b. Diphtheria. Diphtheria not infrequently appears 

 to be spread by milk from milk shops or by that deliv- 

 ered from cooperative dairies, but less frequently than 

 typhoid fever. 



N. Flindt 28 has given a detailed account of such an 

 epidemic in the neighborhood of Holbeak in which the 

 disease was being spread for a long time by milk from 

 a cooperative dairy. He states : The epidemic occurred 

 in June, 1889, and soon became violent. Fifty-one per- 

 sons were sick at the end of the month, 16 cases occurred 

 the following month and in August and September 6 

 more ; 3 patients died. Everything tended to prove that 

 milk delivered from the cooperative dairy had contained 

 the contagion and this belief was strengthened by the 

 fact that two persons from the dairy were affected. The 

 exact mode of entrance of the infectious material into 

 the milk was not traced. The case is remarkable in that 

 the milk appears to have been contaminated for quite a 

 long period. 



27 C. 0. Jensen : On Vanskelighederne ved Typhusbacillens Diag- 

 nose og om Racer af Typhusbacillen. (On the Difficulties of Diag- 

 nosing Typhoid bacilli and on the Races of Typhoid bacilli) 

 Hospitalstidende, 1901, p. 1193. 



28 Ugeskrif t for Laeger, 1890, p. 405. 



