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36 WHOOPING COUGH.
Year.
Quarters 1. 2. 3. 4. Uncorrected. Corrected.
1904 23 27 45 98 193 196
1905 241 255 38 36 570 540
1906 57 65 26 26 174 171
1907 189 305 73 48 615 589
1908 34 65 37 35 171 170
1909 243 243 72 26 584 561
The cases occurred in 325 houses, giving an average of 1.7 cases per house, not
materially different from the average in 1908 (1.6). The frequency of multiple cases is given
below. The secondary cases numbered 236, equal to 42.0 per cent. of the total (40.5 per cent.
in 1908).
1909. 1908. 1907. 1906. 1905. 1904.
Houses with 2 cases 98 22 99 31 93 29
„ 3 „ 41 16 49 17 44 12
„ 4 „ 12 5 12 4 13 5
„ 5 „ 2 — 4 1 3 6
„ 6 „ 1 — 1 — — 2
„ 7 „ — — — — 1 —
„ 8 „ 1 - - — - —
There were 36 deaths during the year, 17 of males and 19 of females, giving a fatality of
6.4 per cent., practically the same as in the previous year. The fatality in males decreased
from 8.8 per cent. to 6.4 while that in females, increased from 4.3 to 6.3. (See below).
Whooping Cough.
Fatality per 100 cases.
1909. 1908. 1907. 1906. 1905. 1904.
Males 6.4 8.8 9.2 8.3 9.6 8.0
Females 6.3 4.3 7.8 6.9 10.2 8.3
Persons 6.4 6.5 8.4 7.6.9.9 8.1
The sex-age-group fatalities are given in Table 29 but they exhibit no marked changes
calling for comment. The total fatality (6.4) shows a decrease from the mean (7.9) but
increases were recorded in Westbourne and Church Wards. (Table 30.)
As in the case of measles, whooping cough may be expected to end fatally more frequently
in the first and fourth quarters of the year, but premising that there is reason to think that
whooping cough is not so completely and systematically reported as is measles, the appended
figures tend to show that the fatality is less influenced by the seasonal occurrence of the
disease than is measles. Further, the changes in the annual fatality do not exhibit that
steady rise and fall which was not noted in the other disease.
Proportion (per cent.) of total attacks reported in—
1st and 4th 2nd and 3rd Fatality.
Year. Quarters. Quarters. per 100 cases.
1903 86.3 13.5 9.9
1904 62.6 37.2 8.1
1905 48.5 51.3 9.2
1906 47.6 52.2 7.6
1907 38.5 61.3 8.4
1908 40.2 59.6 6.4
1909 46.0 53.9 6.4