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31
SPECIFIC INFECTIOUS OR ZYMOTIC DISEASE.
During the year 1907 there were 2,805 cases of infectious disease
compulsorily notified in the Borough; but of these 216 cases were
subsequently found not to be suffering from infectious disease, thus
reducing the genuine cases of notifiable disease to 2,589 cases, an
increase of 846 upon the number notified in 1906. In addition,
157 cases of phthisis were voluntarily notified. The attack rate for
the year in respect of the compulsorily notifiable infectious diseases
is therefore 11.1 per 1,000 persons living. The deaths from the seven
chief zymotic diseases numbered 325. This is equivalent to a
zymotic death rate of 14 per 1,000 living persons in the Borough.
A.— NOTIFIABLE INFECTIOUS DISEASE.
Small-Pox.— No case of this disease was notified in the Borough
during the year 1907.
Scarlet Fever.— The total number of cases of this disease
notified in the Borough during 1907 was 1816, but of this number
119 were afterwards found not to be suffering from this disease.
This reduces the number of genuine cases of scarlet fever to 1,697.
This shows an increase of 700 cases upon the number notified
during 1906. The attack rate of scarlet fever for the year 1907 is
.3 per 1,000 living persons.
During the first five months of the year the incidence of the
disease was low, but in the first week of the month of June a rise
set in which steadily increased with slight remissions until the third
week in July, when 42 cases were notified in that week. During
the next week ending July 27th a slight fall took place, which was
continued into the following week. The lower incidence continued
with fluctuations until the week ending 31st August, when a rise in
the notifications occurred. From the first week in September until
the third week in October a steady and rapid rise in the notifications
took place, reaching in that week the abnormal number of 98. From