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The Immunising material used was Toxoid-Antitoxin Flocules (B.W. <£ Co.) normally in
3 doses of 1 cc, 1 cc and 1.5 cc at fortnightly intervals.
Table 22 shows the comparative incidence among the immunised
and un-immunised persons in the district. Although the risk of contracting
diphtheria is very considerably reduced by immunisation, of
much greater importance is the fact that fatality resulting from this
infection is eliminated.
Measles.
From October 23rd, 1939, measles became a notifiable disease under
the Measles and Whooping Cough Regulations. Prior to this date
the chief source of information as to measles incidence were the
reports from the Head Teachers of the Schools of the Education
Authority.
Measles in Carshalton, in common with the London district, has
in the past shown a biennial periodicity, epidemic prevalence alternating
with years when the infection is almost absent. 1939 was not
a "measles" year, and only three cases came to our notice, one
notified under the Regulations and 2 by the school reports, as compared
with 540 reported among the school children in the year before.
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