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The answer is so clear that "he who runs may read.'' Among
67 unvaccinated persons there were more deaths than among 709
vaccinated persons; and if it be suggested that the doubtful cases
may all have been vaccinated, the case is quite strong enough to
bear this added burden. The vaccinated would then number 730,
and their deaths 31, or exactly the same number as furnished by the
67 unvaccinated. In other words, of the 67 unvaccinated, only 36
remained alive after their attack by Small-pox, while of the 730
vaccinated (including the doubtfuls), 699 survived.
Taking the character of the facial eruption as the standard of
severity, no less than 95 per cent. of the 709 vaccinated had a mild
or "Discrete" attack, 4 per cent. had a severe or "Confluent"
eruption, and only 1 per cent. had that very fatal form of Small-pox
known as "Hæmorrhagic." Among the 67 unvaccinated patients
only 20 per cent. of the attacks were Discrete, while 67 per cent. were
Confluent, and 13 per cent. Hæmorrhagic.