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30
Report of the Medical Officer of Health for 1936.
(3) In a few cases further series had to be given before
immunity was produced.
(4) 3,732 out of 5,086 cases were protected within six
months after receiving the last dose of immunising serum.
(5) By the end of twelve months this number had
increased to 4,645. There are good grounds for assuming that
a proportion of the remainder would have been found protected
if they had attended earlier to be re-tested.
In addition to the 5,091 persons who have been protected,
248 have completed the first series of injections but cannot be
recorded as protected because the last re-Schick test has given a
positive result. 97 of these have not attended since this positive
re-test. The other 151 have attended the Clinics and have
received further injections but have not yet reacted negative to
the re-Schick test.
A further 1,396 persons have been given immunising injections
at the Clinics but have not attended to be re-tested, so that it is
impossible to determine the value of the injections they have
received. This number includes 556 who completed the first
series of three injections and 840 who only received one or two
doses.
57 susceptible persons have not yet commenced a course
of injections.
In the eight years during which the Clinics have been open,
eight children who had reacted negative to the primary Schick
test have been notified to me as cases of Diphtheria. Two of these
showed clinical symptoms of the disease and six were bacteriological
cases with no clinical symptoms.
Eighteen children who had been immunised and reacted
negative to the re-Schick test have been notified as cases of
Diphtheria. Nine of these were clinical cases.
Nine children who had been immunised but were not retested
have been also notified. Three of these were clinical cases.
There were no deaths among these 35 patients.