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In a recent number of The Journal we noticed editorially Ficker's test for typhoid with a solution of dead bacilli. It was also stated that the preparation and instruments were put up by Merck of Darmstadt for ready use. In the last number of the Journal of Infectious Diseases, Ruediger reports the results with typhoid culture bouillon, in which the bacillus had been killed by formalin 1 c.c. to 100 c.c. of bouillon, and the method seems to be fully as simple and practical as that devised by Ficker. It is, therefore, in the power of any one who can make cultures from typhoid bacilli to provide his own solution, and Ruediger's paper shows the peculiar sensitiveness of these dead cultures and mentions in a footnote that a good reaction was obtained with cultures that had been killed just one year before. The process is a very simple one: Add
A SIMPLE BLOOD TEST FOR TYPHOID.. JAMA. 1904;XLII(15):962. doi:10.1001/jama.1904.02490600028013