Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Willesden]
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The following tables well illustrate the truth of
this statement:—
TABLE No. 3.
Mean duration of Membrane. | Fatality Rate per cent. | |||
---|---|---|---|---|
1901. | 1902. | 1901. | 1902. | |
Cases injected on 1st day | 3 days. | 3.6 days | Nil. | Nil. |
„ „ 2nd „ | 4 „ | 4 | 3.7 | 3.3 |
„ „ 3rd „ | 5.6 „ | 4.7 „ | 10.3 | |
„ after 3rd ,, | 7.3 „ | 59 „ | 15.3 |
TABLE No. 4.
Duration of Membrane. | Fatality Rate per cent. | |
---|---|---|
1901. | 1902. | |
All cases up to 5 days | 2.7 | 3.7 |
6 | 3.8 | 60 |
Cases in which it lasted 6 days | 7.1 | 16.6 |
„ „ „ 7 days and over | 211 | 22.9 |
Where the site of the membrane was faucial only,
the fatality rate was 3.7 per cent.; where it was
faucial and nasal, the rate was 21.1 per cent.; where
faucial, nasal, and laryngeal, 30 per cent.