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33
Enteric Fever.
During 1909, 48 cases of enteric fever were notified in the
Borough of Battersea, as compared with 36 in 1908, and 37 in
1907, and seven deaths were registered, giving a case-mortality
of 14.5 per cent. The slight increase during 1909 in the number
of cases was due to a small local outbreak. There was, however,
no increase in the death-rate from the disease, which was exactly
the same as in 1908, viz., .03 per 1,000 population. The incidence
and death-rate from this disease has shown a steady decline both
in London and Battersea during the past ten years.

In the County of London the case-rate was 0.21 and the
death-rate 0.03 per 1,000.
Of the 34 typhoid-infected houses 13 (i.e., 38 per cent.) showed
on inspection defective traps, fittings or appliances. In eight of
the houses the drains themselves were found to be defective.
The source of infection in 16 cases was probably due to personal
infection, or to a so-called "carrier" case. In nine cases it
was ascertained that fried fish had been partaken of during the
critical period and may have been the cause of the disease, and
in four cases shell-fish was suspected as a probable cause of
origin.