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23
Seasonal Mortality.—The highest mortality occurred
during the first and last quarters of the year, the death-rates
from all causes being 13.2 and 10.7 per 1,000 respectively. The
lowest death-rate was 8'2 for the third quarter.
Chart A shows deaths from all causes recorded weekly
and the seasonal effect with regard to Infantile Diarrhoea and
diseases of the Respiratory Group.
Table 10 gives the total deaths in 12 classes registered in
each quarter, from which it will be seen that deaths from
diseases of the respiratory organs and infective diseases were
the highest during the first quarter of the year.
ZYMOTIC DEATH RATE.
The Zymotic death rate is calculated upon the total
deaths occurring at all ages from the principal infectious diseases,
viz.:—Small-Pox, Measles, Diphtheria, Scarlet, Typhus
and Typhoid Fevers, Whooping Cough, Dysentery, Epidemic
Diarrhoea and Epidemic Enteritis.
For the year under review, the zymotic death rate for
Lewisham amounted to 0 47 per 1,000 persons, compared with
1.14 for the previous year, or a decrease of 0.67 per 1,000.
This improvement has been general, and is the consequence
of fewer fatalities in all the common infectious diseases with the
exception of Scarlet Fever, as shown in Table 18.
The Lewisham zymotic death rate, 0.47, compares
favourably with the rates 1.31 for the County of London,
1.42 for the 76 Great Towns, and 1.12 for England and Wales
during the same period, and is considerably below the average
for Lewisham (1.13) for the past seven years.