The favorable results obtained with antityphoid vaccine during former years1 led us to expect much from the measure, but the remarkable records of the past year, 1913, have far surpassed our expectations, and are of so striking a character that their publication seems desirable.
As will be shown in the accompanying charts and tables, in the entire army of over ninety thousand men, only three cases of typhoid fever, with no fatalities, have occurred during the year 1913.
The year 1911 marked the beginning of compulsory vaccination in the Army for all persons under 45 years of age; but the full effect of such vaccination was not immediately seen, since five times as many cases occurred that year as during 1913, and it is very probable that the rate has now reached an irreducible minimum.
Table 1 shows that the number of cases in the United States proper has
RUSSELL FF. ANTITYPHOID VACCINATION IN THE ARMY DURING 1913. JAMA. 1914;LXII(18):1371–1373. doi:10.1001/jama.1914.02560430001001