Abstract
Effect of B.C.G. on the incidence of adolescent tuberculosis is investigated. A marked contrast between the incidence of tuberculosis in the B.C.G. vaccinated group (0·29 per 1,000) and the unvaccinated group (4·86 per 1,000) is revealed. This confirms the protective efficacy of B.C.G. and strengthens the case for trying to increase the acceptance rate. I am indebted to Dr. J. S. G. Burnett, Medical Officer of Health, Preston, forpermission to publish this paper. I thank Dr. M.R. Geake and or allowing me access to clinical case records. My thanks are M.R. Purdom for his help, Mr. A. Birchall for the preparation of Miss M. Shaw for her assistance.
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