London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Islington 1912
[Report of the Medical Officer of Health for Islington, Metropolitan Borough of]
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124
1912]
First Quarter.—The 319 cases notified were equal to an attack-rate
of 3.91 per 1,000, and they contrasted with a decennial average of 461 cases,
so that the return showed a decrease of 142.
Second Quarter.—There were 335 cases notified, or 106 fewer than the
average for the decennial period. They represent an attack-rate of 4.10 per
1,000 inhabitants.
Third Quarter.—422 cases were known, which is 112 below the average
that obtained in the corresponding quarters of the 10 years, 1901-1910. They
were equal to an annual attack-rate of 5.17 per 1,000 of the population.
Fourth Quarter.—501 cases were notified, as contrasted with a
decennial average of 608. There has, therefore, been a decrease of 107
attacks. These cases represent an attack-rate of 5.14 per 1,000 of the
population-
The following statement gives the particulars for each quarter:—
| Quarters. | Cases. | Attack-rates. | Decennial average. | Decrease. |
|---|---|---|---|---|
| First | 319 | 3.91 | 461 | —142 |
| Second | 335 | 4.10 | 441 | —106 |
| Third | 422 | 5.17 | 534 | —112 |
| Fourth | 501 | 6.14 | 608 | —107 |
FATALITY FROM THE INFECTIOUS DISEASES.
By this phrase is meant the percentage proportion of deaths to attacks.
Thus if there were 100 attacks and 5 deaths the fatality would be 5 per cent.
It is very satisfactory to note that only 62 deaths occurred among the
1,577 cases notified, and consequently the fatality was only 3.9 per cent.,
which is the lowest known in the borough since these diseases were
made compulsorily notifiable. In the chart which accompanies this part of the
report it will be seen that as the number of cases decreases so almost invariably
does the fatality rate.