XIV, 1 
Lantin: Treatment of Typhoid Fever 
relation to intravenous injections. This abortive type was ob- 
served in mild cases in the majority of instances and in severe 
cases in a few instances. The temperature record of one of 
the abortive cases is shown in the accompanying chart (fig. 1). 
Fig. 1. Temperature chart of B. Y. Abortive type of typhoid fever, treated with sensitized 
typhoid vaccine intravenously. 
The benefited type was observed during the second week. As 
a rule the temperature drops, either by crisis or by lysis, fol- 
lowing ehch successive intravenous injection; but afterward it 
rises again temporarily, then becoming permanently normal. 
The average duration of treatment was 14.4 days in my cases, 
while in those of Gay it was 15.8 days. Examples of the ben- 
efited cases are shown in the accompanying charts (figs. 2, 3, 
and 4). 
The relatively unaffected type was observed in advanced 
cases. Each injection was followed by a temporary drop in 
temperature, which subsequently in some cases resumed the 
original level at which it was before the injection, while in 
others it became slightly remittent or intermittent. The course 
of the disease was slightly altered. The average duration of 
the disease was 25.3 days in this series. 
Symptomatology . — From thirty minutes to one hour after the 
intravenous injection of vaccine, the patient as a rule feels a 
slight chilly sensation as a prodromal symptom. This lasts for 
a few minutes ; then follows the real shaking of the entire body. 
This rigor shows varying degrees of intensity according to in- 
dividual susceptibility, and may last for from fifteen to thirty- 
