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Of these 11, or 15 per cent., were between 0—3 years of age.
49, or 67 „ „ 3—13
13, or 18 „ were 13 years of age and upwards.
Four of these cases were imported, or probably imported, from outside the district, and if these be
excluded, the above figures would be—
11, or 16 per cent.
47, or 68 „
11, or 16 „
Comparing "primary with ''secondary" cases the incidence upon children of school age
is more marked among the former than the latter, thus-—
Of the 73 cases of diphtheria notified in Woolwich—
56, or 76.7 per cent., were "primary " attacks in houses.
17, or 233 „ "subsequent" „
Of the 56 primary cases, there occurred between the ages of—
0—3 years. 5 cases, or 8.9 per cent.
3—13 „ 41 „ 732
13 and upwards, 10 „ 18.8 „
Of the 17 subsequent cases, there occurred between the ages of—
0—3 years, 6 cases, or 35.3 per cent.
3-13 „ 8 „ 47.0 „
13 and upwards, 3 „ 17.7 „
It is, however, desirable to restrict consideration to 48 primary cases and 15 subsequent cases
since, as a result of the inquiry which has been made- it has been found, as regards the former, that
2 cases were imported into the district,
2 „ probably imported into the district,
and that no information could be obtained as regards other 4 cases, while as regards the subsequent
cases no information could be obtained as regards 2 cases.
The figures then are—
Primary cases—
between 0—3 years, 3 or 6 3 per cent.
„ 3—13 „ 37 or 77 0 „
13 and upwards, 8 or 16.6 ,,
Subsequent cases—
between 0—3 years, 6 or 40 per cent.
3—13 „ 7 or 47
13 and upwards, 2 or 13 „
The figures are small, but they serve to indicate that there was a much greater incidence
on children aged 3—13 in the case of primary attacks than in subsequent attacks.
History of the disease during the special period.