Efficacy and applicability of mass B. C.G. vaccination in tuberculosis control.

Marc Daniels was a close friend.He was my colleague for seven years on the Medical Research Council's Tuberculosis Research Unit.He was largely responsible for two epidemiological researches paving the way to the M.R.C. trial of B.C.G. vaccination-namely, the Prophit Report of this College on Tuberculosis in Young Adults, and the National Tuberculin Survey.In 1949, when there was much disagreement on the value of B