Investigation 1 - Pulmonary Tuberculosis in Non-Irish Immigrants;
London and Home Counties Hospital Patients, March 1955
Investigation 2 - Pulmonary Tuberculosis Notifications according to
Nationality; London and Home Counties, 1956
Investigation 3 - Patients with Pulmonary Tuberculosis in
35 Hospitals; London and Home Counties, April 1961
Condensing and summarising the results of the three investigations
it seems reasonable to conclude that:
1) As regards pulmonary tuberculosis, the ratio of breaklon
amongst immigrants as against British -born, taking into account the relative
numbers in the population, was 2:1 in London in 1955 and is unlikely to be less
in 1961 though the actual number of immigrants with the disease may have declined.
- 2) Hospital patients from India and Pakistan show an increase in actual
numbers whereas those from most other countries, including Ireland and the
West Indies, seem to have declined.
3) Immigrants with a rural or agricultural background have an
incidence of acute disease about twice that of those from urban r mixed urban
and rural environment.
4) The most logical explanation of this difference would appear to
be that people from a rural background possess amongst them more susceptibles
in whom primary infection progresses without interruption to tuburculous disease.
5) The continued migration of agricultural populations to
cities inside and outside their own countries is an important fa tor in