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cations, were, after removal to hospital, stated to be not
diphtheria The percentage of the three preceding years was
8, 14 and 8, respectively
54. Source of Infection In 50 cases, a probable source of
infection was noted, viz—in 31, other inmates of the house
were suspected to be the source; in 4, schoolmates; 8, neighbours
and friends; 3 return cases; 4 general hospitals The
3 return-cases followed 3 returned cases; 1 of the returned
cases went away with scarlet fever, and 2 for diphtheria; the
first had otorrhcea in which diphtheria bacilli were found; one
had rhinorrhoea One home return-case occurred, the first
patient being released from isolation without a bacteriological
examination
55 There was an outbreak of diphtheria in connection with
Timbercroft Road School Repeated bacteriological examinations
were made, and one room was closed for two weeks
Several carrier and mild cases attending school were detected
and excluded, and the disease abated Elizabeth Street school
was also affected
56 Bacteriological Diagnosis 768 swabs were sent to the
Lister Institute to be examined for the presence of diphtheria
bacillus In 90 the true Klebs Loftier bacillus was found (in
9 of these, Hoffman's bacillus co-existed with the Klebs Loffer
bacillus) ; in 189 Hoffman's bacillus was found, and 489 were
found free from either the Klebs LolMer bacillus or Hoffman's
Of the 768 swabs examined, 244 were taken from school
children by myself Of these, 20 contained the true Klebs
Loffler bacillus (including 4 with Klebs LofHer and Hoffman's)
and 101 Hoffman's bacillus Most of these were contacts seen