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quarter 18, in the third quarter 10, and in the fourth quarter 18. The
percentage of cases of school age (3 to 13 years) for the whole Borough
was 67 per cent. There were no outbreaks in the course of the year
specially attributable to school infection. In North Chelsea 31 cases
were notified, and in South Chelsea 30 cases. There was no autumnal
increase in prevalence of the disease. The average duration of the stay
in hospital of 37 cases, of which the records are to hand, was 54 days.
Six cases admitted to the M.A.B. hospitals were subsequently certified
by the Medical Superintendents of these Institutions not to be suffering
from diphtheria or any other notifiable disease. The average duration
of the stay in hospital of 4 of these cases was 19 days.
Enteric Fever.—The number of cases of enteric fever notified in
Chelsea in 1904 was 13, the same number as in 1903, the case-rate
again being an exceedingly low one, namely, 175 per 10,000 of the
population. Four cases were notified in the first quarter of the year,
1 in the second, 5 in the third, and 3 in the fourth quarter. In
North Chelsea 8 cases were notified, in South Chelsea 5 cases. Two
out of the 13 cases had a fatal termination.
Out of the 13 cases, in 3 the infection of the disease was probably
contracted outside the Borough of Chelsea. In one of these cases the
consumption of infected oysters at Yarmouth in September was
regarded as the cause of the illness.
Case Mortality.—The following Table shows the case mortality, or
percentage of deaths to notifications of scarlet fever, diphtheria
(including membranous croup), and enteric fever in Chelsea and in
London, in each of the 15 years, 1890-1904.