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(d) Food Poisoning.
No cases were notified during the year, but there is no doubt
that many cases of a minor degree have occurred, which have not
been brought to our notice, either because they have been attributed
to some other condition, or because the symptoms have been so mild
that the sufferers have not troubled to seek medical advice.
There is no doubt but that a major outbreak would come to our
notice immediately.
(e) Measles.
488 cases were notified, and they occurred mostly during the
months of May and June.
(f) Scarlet Fever.
This year 99 cases were notified with residence in the district,
and the type continued to be mild.
(g) Smallpox.
No cases occurred in the district, but supervision was again
given to contacts who had travelled from abroad.
(h) Whooping Cough.
327 cases were notified with residence in the area, and these
were distributed fairly evenly throughout the year, with perhaps
rather larger numbers during January, April, and May.
(ii) Non-Notifiable.
There are relatively few infectious diseases, which are nonnotifiable.
The prevalence of these, during the year, is set out below, but
they are probably a low estimate, as the figures are compiled from
the school returns only.

7.—SUPPLEMENTARY.
(i) Section 47, National Assistance Act, 1948.
It was not found necessary to take action under this Section of
the National Assistance Act, 1948.
(i) Mass Radiography.
During the months of November and December, arrangements
were made by one of the Mass Radiography Units of the NorthEast
Metropolitan Regional Hospital Board for the examination of
volunteers in this area, and I am indebted to Dr. H. Ramsey, the
Medical Director for the following information:—
A total of 5,189 miniature photographs were taken, and subsequently
199 large films. Of these 199; 48 were classified as
normal; 31 showed abnormalities, which did not require further
action; 110 were investigated by the Medical Director; 1 was
already attending a dispensary; and 9 did not attend for investigation.
Dr. Ramsey expressed himself as being very satisfied not only
with the response, but also with the results.