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35
CLASS I.—ZYMOTIC DISEASES.
Principal Zymotic Diseases.
The principal Zymotic diseases are seven in number, viz.,
smallpox, measles, scarlet fever, diphtheria (deluding membranous
croup), whooping cough, "fevers" (including typhus,
typhoid or enteric, and simple or continued), and diarrhœa; and
the zymotic death-rate is made up from the total deaths from
these diseases. As a test of the sanitary condition of a Community,
the zymotic death-rate is of approximate value, and the
statistics for the Borough of Lambeth are very satisfactory for
1907, being 46.3 per cent, below the average (1891-1900).
In the Borough of Lambeth, during 1907, there were registered
425 deaths from the seven zymotic diseases, and of these 75
were strangers belonging to other districts, and 350 parishioners
who died within the Borough. 29 parishioners, however, died
without the Borough. Subtracting the strangers, and adding on
the parishioners who died without the Borough, there is a corrected
total of 379, giving a zymotic corrected death-rate of 1.2
per 1000 inhabitants, the corrected rate for London being 1.4,
varying in the different Metropolitan Districts, as shown on page
9. The zymotic death-rates (corrected) for the different new
Registration Sub-Districts of the Borough of Lambeth vary
also, as shown in Tables D and E, which in addition give the
death-rates and birth-rates for comparison. Waterloo shows
the highest, and Norwood the lowest, zymotic death-rates
respectively. The corrected zymotic death-rate for the Inner
Districts is 1.8, and for the Outer, 0.7—a difference explainable,
as before, from the crowding and absence of proper means of
home isolation and nursing in the former, as compared with the
latter, districts. Crowded districts naturally suffer more in this
respect than those more sparsely populated.