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21
that school closure may have an effect on the fatality of an
epidemic. It is well known that the principal danger of
Measles lies in the size of the epidemic. There is a greater
proportional case fatality in large than in small epidemics.
The cases increase in severity as an epidemic progresses.
This phenomenon is illustrated by the following table :
Cases Notified.
Deaths.
March
1st week
7
,,
2nd ,,
0
,,
3rd ,,
1
1
,,
4th ,,
13
April
1st ,,
59
1
,,
2nd ,,
5
,,
3rd ,,
100
,,
4th ,,
31
2
May
1st ,,
22
2
,,
2nd ,,
14
3
,,
3rd ,,
13
3
,,
4th ,,
14
3
June
1st ,,
26
2
,,
2nd ,,
47
2
,,
3rd
39
3
,,
4th
23
2
July
1st ,,
12
1
,,
2nd ,,
17
2
,,
3rd ,,
10
3
,,
4th ,,
7
6
August
3rd ,,
1
,,
4th ,,
2
The drop in the number of notifications received in May
was partly due to the closure of Southfield Road Infants'
Department. The outbreak reached its height during the
third week in April, and began to decline towards the end of
May. The number of deaths, though, was higher in July than
in any other month. Of course a certain interval generally