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41
(i) Of the 197 houses in which the disease has occurred, 119 (or 61.4
per cent.) were clean houses of good sanitation to which exception
could not be taken. Small-pox is not, therefore, a disease only of
unclean people. (ii) In the four or five centres of infection where
the disease spread most, there was a high density of population.
The point does not require elaboration. It is evident that diseases
which spread by contact will quickly respond to evercrowding or
density of population.
2. Age and Sex Incidence.—Out of the total of 275, 158
(or 57 per cent.) were males, and 117 (or 43 per cent.) were females.
There were of both sexes 79 cases (52 boys and 27 girls) occurring
under 15 years. Between 15 years and 35 years there were 162
cases (88 males and 74 females). The following table sets forth
these figures and illustrates that it is adolescence and young adult
life which has suffered most:—
Ages in
Years
0-
1-
5-
10-
15-
20-
25-
30-
35-
40-
45-
50-
55-
6o-
65
Totals.
MALES.
Cases 5 17 15 15 22 19 17 21 9 9 6 2 — 1 158
Unvaccinated 5 16 12 10 4 3 2 1 1 — — — — — 54
Deaths 3 6 3 1 1 4 1 2 3 2 — — — — 26
FEMALES
Cases — 5 8 14 23 23 20 2 6 8 4 31 — 117
Unvaccinated — 5 5 3 6 2 1 — — — — 1 — — 23
Deaths— 2 2 2 4 1 2 — — — — 1 — — 14
Totals of
cases 5 22 23 29 45 42 37 23 15 17 10 5 1 1 275