VARIATIONS IN TYPHOID BACILLI

Typhoid Bacilli and the Blood Test

Dear Sir,?At the present early stage of sero-diagnosis in typhoid fever perhaps this note may not be quite inopportune. Not having previously seen the method applied, I asked Dr. Srinivasa Rao, Bacteriologist to the Government of Mysore, to kindly give a demonstration in case I could find the necessary material. This Surgeon-Colonel Lang Browne very kindly supplied in the South Station Hospital...

Microcinematography of the Agglutination of Typhoid Bacilli.

Growth of typhoid and paratyphoid bacilli in intravenously infected mice.

The in vivo growth of Salmonella paratyphi A, S. paratyphi B, S. paratyphi C, and S. typhi, as well as of an S. typhi-typhimurium hybrid, was studied in three different strains of mice. S. paratyphi A and B and S. typhi demonstrated very little growth potential in any of the intravenously infected mice, even after as many as 20 serial mouse passages. It was noted, however, that small numbers of...

The Agglutinability of Blood and Agar Strains of Typhoid Bacilli

Cultivation on 10 per cent rabbit blood agar did not affect the agglutinability of fifty-seven strains of typhoid bacilli. The authors were unable to confirm the observations of Gay and Claypole on the variation in agglutinability caused by cultivating the typhoid bacillus on blood agar. A typhoid bacillus showing irregularity in fermentation, agglutination, and indol production is described.

The Application of the D.E.C. Medium to the Isolation of Typhoid Bacilli from Sewage in Calcutta

see whether our medium would remove the "above disadvantages, and whether a higher percentage of isolation would be obtained. The Wilson and Blair medium was prepared according to the latest formula given by Wilson and Blair (1931). First of all, it was tested with pure cultures of typhoid bacilli. After 24 hours' incubation, most of the colonies were greenish in colour, but a few were small an...