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 Barking]
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other in the home, hence the chance of such a unit occurring in
our record is 22-4, and similarly the chance of a family of ten
occurring is 102 = 100. Thus, a family of ten should be attacked
at 2(5 times the rate of a family of two. Hence the curve of incidence
can be regarded as a number of curves which depict the
rate of spread in a population of a density similar to families of
i, 2, 3, etc. If these are superimposed, assuming a normal distribution
in each case, a skew curve will be produced. Actual
observation shows that the number over ten years of age per
household during the rise of an epidemic of measles was 2.7 (300)
and in the fall -.4 (300), a significant difference.
The number of children under ten were approximately equal.
Age. | 1916. | 1917. | 1918. | 1919. |
---|---|---|---|---|
0-1 | 34 | 61 | 16 | 13 |
1 | 17 | 109 | 42 | 21 |
2 | 23 | 129 | 69 | 23 |
3 | 21 | 110 | 62 | 40 |
4 | 18 | 114 | 84 | 28 |
5 | 42 | 150 | 129 | 52 |
6 | 25 | 132 | 76 | 60 |
7 | 19 | 52 | 33 | 41 |
8 | 27 | 7 | 9 | 28 |
9 | 24 | 15 | 1 | 20 |
10 | 13 | 8 | 2 | 7 |
11 | 10 | 4 | 2 | 7 |
12 | 10 | 1 | 4 | 6 |
13 | 5 | 5 | 1 | 5 |
14 | 2 | 5 | — | 3 |
15 | 3 | 3 | — | 1 |
16 | 5 | 1 | — | 2 |
17 | 4 | 2 | — | 1 |
18 | — | 1 | — | — |
19 | 2 | — | — | 2 |
20 | 3 | 3 | 1 | 1 |