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cough, or scarlet fever. One returned case went to hospital
for measles; Diphtheria bacilli were found in her throat
on notification of the brother 12 days after her return.
Another child returned from Gore Farm after Diphtheria
with a running nose. The discharge was found to contain
Diphtheria bacilli, and the child was accordingly again sent
to the Brook Hospital.
53. Bacteriological Diagnosis. 705 (526 in 1910) swabs
were sent to the Lister Institute to be examined for the
presence of Diphtheria bacillus. In 92 (73 in 1910) the
true Klebs Loffler bacillus was found (in 2 of these
Hoffman's bacillus co-existed with the Klebs Loffler bacillus).
in 101 (78 in 1910) Hoffman's bacillus was found, and
512 were found free from either the Klebs Loffler bacillus
or Hoffman's.
Of the 705 swabs examined, 255 were taken from school
children by myself. Of these, 27 contained the true Klebs
Loffler bacillus. Most of these were contacts seen about ten
days after notification of a primary case for the purpose of
preventing pupils returning to school in an infectious state.
Others "were examined with the object of finding possible
sources of infection, e.g., where the first case notified in a
house was a child not attending school; others again were
children suspected to have diphtheria by the school teacher.
The contacts found positive on the first examination who
had no symptoms were re-examined at intervals of ten
days, or two weeks; 3 were found negative on the second
examination; in 2 Hoffman's bacillus was found on the
second examination, and in 2 a positive result occurred