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Total number of immunisations completed during 1937:—
(a) School age 1,250
(b) Pre-school age 154
(c) Over school age 6
Total 1,410
Number not completing immunisation or left district 38
Number of Schick & re-Schick tests following immunisation 777
Number of attendances made at Infectious Disease clinic
for immunisation 1,916
Immunisation at schools (included above):—
Number completely immunised 490
Number partly immunised 10
Number having second dose, immunised with single dose
APT 1936 108
Diphtheria Immunisation at Schools—The first term of
1937 was occupied in completing the posterior Schick testing at
eight Infants' departments which remained out of the 21 departments
with children under 8 years of age and at which immunisation
had been commenced with single dose Alum Precipitated
Toxoid at the end of 1935
Summarising the whole of the work done since that time, a
total of 1,502 posterior Schick tests: were done in children given
one dose of 05 cc APT, and of these 1,141 (or 760 per cent)
were negative at an average period of 238 weeks following the
single dose The maximum and minimum percentages were respectively
98 and 28, at different schools
The Schick test results at the various age levels are given
below:—
Age
Group
Total Schick
Tested
Total
Positive
%
Positive
%
Negative
1-2
19
—
00
1000
2-3
36
2
55
945
3-4
65
8
123
877
4-5
151
26
172
828
5-6
378
89
235
765
6-7
463
137
296
704
7-8
389
98
252
748
8-
1
1
1000
00
Totals
1,502
361
240
760
The results suggest that the unreliability of the single dose
method increases with age