36 
The Philippine Journal of Science 
191S 
As shown in Table XIII there were five aborted cases, ob- 
served during the second week of the disease, of which two were 
mild and three were severe and nontoxic, with an average dura- 
tion of the disease of 15.1 days. On the other hand there were 
three benefited cases, all of which were severe and nontoxic, with 
an average duration of 24.9 days. The total average duration for 
the aborted and benefited cases was twenty days, in contrast to 
24.1 days, the total average duration for the cases treated with 
sensitized vaccine intravenously. The difference in results may 
be accounted for by the difference in the severity of the cases, 
the period of observation, and the relatively fewer cases in the 
series. An illustration of the abortive type is shown in the 
accompanying charts (figs. 5 and 6). 
Fig. 5. Temperature chart of J. A. Abortive type of typhoid fever, treated with nonsensi- 
tized typhoid vaccine intravenously. 
Fig. 6. Temperature chart of C. G. Abortive type of typhoid fever, treated with nonsensi- 
tized typhoid vaccine intravenously. 
