Since the results of our campaign against typhoid in Texas have become generally known, there has developed among the medical profession and the laity an active interest in typhoid prophylaxis by means of bacterial vaccines, and for this reason it is believed that a statement of our experience in the army and the present status of the subject may be of value.
To illustrate by comparison I shall refer to vaccination against small-pox, it being the only other measure of this kind which has been extensively used and carefully studied; we know positively that when vaccination against small-pox is thoroughly carried out the disease disappears; we also know that the duration of immunity following vaccinia is not so long as our forefathers believed. In Germany the vaccination of infants is compulsory and revaccinations are required at school age, at the age of compulsory military service and again if there be
RUSSELL FF. SOME RESULTS AND FIELDS OF USEFULNESS OF ANTITYPHOID VACCINATION. JAMA. 1912;LIX(15):1362–1364. doi:10.1001/jama.1912.04270100130007
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