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19
Under
lyr.
1.2. 2.3. 3.4. 4.5. 5.10
Over
10
Total number of
persons living
1155 974 1028 1000 951 4530 25968
Number attacked
by Measles
166 233 354 324 324 560 39
Deaths from Measles
16 46 36 16 5 6 0
Measles attack-rate
per 1000 living
72 119 172 162 170 62 0.75
Measles death-rate
per 1000 living
6.9 23.6 17.5 8 2.6 0.7 0.0
Measles fatality-rate
per 1000 attacked
96 197 102 49 15 11 0
The above table refers to a particular Urban District
where the number of persons attacked by Measles at each of
the several age periods was known, and shows that while the
main incidence of death is on the second year, the incidence
of attack is chiefly on the third, fourth and fifth years.
1501 cases were investigated in Acton last year, and the
ages of these were:—
Under 1 yr. 1-2. 2-3. 3-4. 4-5. 5-6. 6-7. 7-8. 8-9. 9-10. over 10 yrs.
32 23 35 56 180 392 356 207 78 39 103
The ages at death have already been given. The above
figures, of course, do not represent the relative number of
cases at different ages which occurred last year. The majority
of cases which come to the knowledge of the Sanitary Department
would be children of school age, and Measles occurring
among young children would remain unreported.
The figures though are sufficiently suggestive that Measles
is a very fatal disease when occurring among children under
three years of age, but comparatively benign when it attacks
children over five years old.
This aspect of the question is of importance from two
points of view. If the interepidemic period could be lengthened,