A paper read by Robert Cory, M.A., M.D., to the members of the Association, at the Charing Cross Hospital Medical School, 20th June, 1885.

  • Cory, Robert.
Date:
[1885]
Catalogue details

Licence: Public Domain Mark

Credit: A paper read by Robert Cory, M.A., M.D., to the members of the Association, at the Charing Cross Hospital Medical School, 20th June, 1885. Source: Wellcome Collection.

Provider: This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.

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    i cinated in London, I am sure ratjpo of I'^o, „ , ^ ' ^^^ ot insusceptibility would be few and far between. Another point I would press upon your notice is the Immense superiority of good Vaccination. Almost any Vaccmation, even bad Vaccination, will for a while give im munity from Small Pox attacks. But the protection afforded by a really efficient Vaccination will last very much longer than that which is got by what I may call bad or perfunctory Vaccmation. Let me show you exactly what I mean by means of a simple line divided into 9 parts. 0 The zero end of the line will represent a person un- vaccinated; 4, his condition when immunity from Small Pox is reached after Vaccination; y, his condition when fully vaccinated; bad vaccination will place him between 4 and 9. To whichever position he has attained, there will always be a tendency to return in some cases slowly, in some quickly to the unprotected state, and therefore the more efficient the vaccination the longer the interval before the position 4 is reached in this retrograde march. Now whether we are vaccinated in one place or more we are all protected for a certain interval from Small Pox, but those who have the larger number of places are protected for the longer interval, so that Statistics ought to and do show that people who have been vaccinated in one place only, as evidenced by one scar, will suffer more from Small Pox than those which have been vaccinated in a larger number of places.