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43
who came to live in the new London County Council Headstone Estate;
this is a smaller number than in previous years. Although the estate is
now built up there probably will always be a certain number of such
transfers because of the filling of houses which fall vacant by the families
living in London whose claims for rehousing rest especially on the grounds
that they contain members suffering from tuberculosis. It is probably
in this way that three persons who had previously contracted the infection
were notified when they came to live in the London County Council
Kenmore Estate.
A comparison of the age distribution of the cases brought to notice
by primary notification in the years 1949 and 1950 shows that the greatest
divergence is in the numbers notified in those of ages one to four. There
were 15 such cases in 1950, as compared with only six in the previous
year. Of these, three removed to the district, having already contracted
the infection; two of them gave a family history of the disease. Of the
12 who contracted the infection in this area nine gave a close family
history of contact. It is probable that many of these were brought to
light by the examination of the family contacts of those in which the
disease had been detected. Of the 235 patients notified during the year
as suffering from pulmonary tuberculosis, 78 or almost exactly onethird,
gave a family history of the disease.
Of the 29 patients notified as suffering from non-pulmonary tuberculosis
at least ten had contracted the infection before coming to live here.
Register.
The names of all persons notified or otherwise brought to notice are
entered on the register. These entries lead to an increase to the numbers
on the register. On the other hand, deductions are made by names being
removed. Many names are taken off because of persons moving from the
district; some die and some recover. Quite apart from the quarterly
corrections made in the register, periodically a check is made to ensure
that everv nerson whose name is on the register is still in the district

Of the deductions, 110 (102 pulmonary) were of persons who had left
the district, 45 (44 pulmonary) were of persons who died, 50 (44 pulmonary)
were of persons who recovered, while 8 (7 pulmonary) were of
persons in respect of whom the diagnosis was withdrawn.