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22
Of the 509 cases which occurred during the year 436 had
been vaccinated, 56 cases were unvaccinated, and 17 were
returned as doubtful.
Vaccinated 85.6 per cent.
Unvaccinated 11.1 „
Doubtful 3.3
During the year 85 cases died, or 16.6 per cent.
An analysis of the fatal cases showed that there had been
29 deaths in vaccinated persons, 44 deaths in unvaccinated
persons, and 12 deaths in persons from whom no statement
or information could be obtained regarding vaccination.
The percentage of deaths in persons vaccinated, and in
persons unvaccinated, would read as follows:—
Vaccinated 6.7 per cent. of deaths.
Unvaccinatcd 78.5 „ ,,
It is interesting to note that although vaccination, in
numerous cases, does not prevent the advent of Small Pox,
and in a small percentage of cases does not prevent death,
its power of modifying the severity of the disease is shown
in this epidemic in a marked manner. In persons vaccinated
—in many imperfectly, in many fifteen or twenty years ago—
only one in fourteen has died; in persons unvaccinated
more than three in every four persons attacked have died.