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115
Five pairs and one set of three cases of diphtheria were
notified simultaneously. When enquiries were made, in
only one instance was it found that the origin of the disease
in both persons was on the same day. In addition to these, four
more cases were notified within 24 hours of each other. When
allowance is made for these and for return cases, and for
cases notified on more than one occasion during the year,
there is, as in the case of scarlet fever, insufficient data for
determining the effect of domestic overcrowding upon the
incidence of diphtheria amongst susceptibles.
Schick Test. The Schick test—a reference to which is made
in the prefatory note of this report—has not been employed
in the area so far as I am aware, and no artificial measures of
immunisation against the disease have been made use of.
ENTERIC FEVER.
Sixteen cases of enteric fever were notified during the year.
In only one case was the diagnosis not confirmed. In the
following Table the details of each case are shown: