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the unvaccinated, whether regard be had to the number of cases
of Smallpox notified, or to the deaths from Smallpox registered.
The same argument applies to both the child and the adult
populations of Lambeth Borough (or elsewhere throughout London).
In this way, the smallness of the figures will not prevent
satisfactory conclusions being drawn in regard to the efficacy of
recent vaccination as, practically, a preventative aganst death from
Smallpox, as well as against even an attack of the disease. Even
when a lengthened interval has elapsed between the operation
of vaccination or re-vaccination and the Smallpox attack, the
disease appears to be modified and rendered less fatal.
As was to be expected, all parts of the Borough have not
suffered equally. The incidence of the disease shews a rate of
7.5 in the Inner, as compared with 0.7 in the Outer, Wards,
and is found to have varied from a maximum 3.9 in Marsh
to a minimum 0.3 in Norwood, per 1000 inhabitants. The incidence
throughout the whole of the Borough of Lambeth was 1.3
per 1000 inhabitants—the smallness of the rate being due to the
energetic precautionary measures that were taken (vide infra).
The 404 cases represent 333 infected houses, and may be
classified according to Wards as follow : —