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 Greenwich Borough.
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TABLE II
No Persons in Family | No. of Families | Notifications | ||||||
---|---|---|---|---|---|---|---|---|
Primary | Secondary | Attack Rate* | ||||||
Pos. | Neg. | Total | Pos. | Neg. | Total | |||
1 | 2 | - | 2 | 2 | - | - | - | - |
2 | 7 | 4 | 3 | 7 | - | - | - | - |
3 | 41 | 16 | 28 | 44 | 6 | - | 6 | |
4 | 72 | 51 | 40 | 91 | 24 | 4 | 28 | |
5 | 60 | 52 | 28 | 80 | 31 | 3 | 34 | |
6 | 40 | 41 | 13 | 54 | 39 | 2 | 41 | |
7 | 16 | 18 | 4 | 22 | 24 | 1 | 25 | |
8 | 6 | 20 | 1 | 21 | 1 | - | 1 | |
9 | 4 | 2 | 2 | 4 | 5 | - | 5 | |
10 | 2 | 1 | 2 | 3 | 2 | - | 2 | |
Totals | 250 | 205 | 123 | 328 | 132 | 10 | 142 |