Immunity in relation to variola and vaccinia
Riddell, Robert George
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This Thesis is the result of a study of the various ' manifestations and forms of Irmmunity, as exhibited n Variola and Vaccinia in different circumstances. he subject is no new one. The fact that Immunity is )roduced by an attack of smallpox appears to have been ecognised at a very early date; and it is known, that he Chinese put this knowledge to practical use by ractising inoculation in times of remote antiquity. n this country,previous to the introduction of protect ive measures, it was known, that to have "passed "the smallpox was to have ensured in most cases a safeguard against further attack:It is however during the last century and a half since the introduction of inoculation as a protective measure and more particularly since the introduction of vaccination over I00 years ago, that so much attention has been focused upon the subject;and it is probable, that there are no diseases,which have been subjected to such close and constant observation, and concerning which such stores of statistical information have been collected,as have Variola and Vaccinia.