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170
School Closure. 16 departments were closed by the London
County Council during the year.
Whooping Cough. During the year 508 cases of whooping
cough came to the knowledge of the department through the
school medical service. As this disease is not notifiable a
knowledge of its incidence can only be obtained by the
department in the above way or, incidentally, by casual
discovery by the health visitors during their daily routine.
Deaths. The number of deaths was 17, as compared with
12 in 1924 and 4 in 1923. 16 deaths occurred in children
under five years of age.
Zymotic Enteritis. Thirteen cases of zymotic enteritis
were notified, compared with the same number in 1924. The
number of cases notified and the number of deaths certified
to be due to diarrhoeal diseases in each quarter are shown
below. Six of the deaths were of infants under one year.
Quarter. Cases. Deaths.
First 2 1
Second 1 3
Third 9 4
Fourth 1 1
13 9
Anterior Poliomyelitis. Only one case of this disease—
which may be desribed as the acute stage of infantile paralysis
—was notified during the year. It was characterised by a
very sudden acute onset and death took place within 72 hours.
The following table, No. 78, shows the condition at the end of
1925 of each case notified in the last three years. Four of