alexa Trial of BCG vaccines in south India for tuberculosis prevention: first report--Tuberculosis Prevention Trial.
Microbiology

Microbiology

Journal of Antivirals & Antiretrovirals

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Abstract The protective effect of BCG vaccination is being evaluated in a controlled community trial near Madras in south India. After tuberculin and sensitin testing and radiographic and bacteriological examinations, BCG vaccines and placebo were allocated randomly to about 260 000 individuals, of whom 115 000 were definitely tuberculin negative at the time of vaccination. Intensive efforts are being made, by means of regular follow-up surveys, to identify all new cases of tuberculosis occurring in the community. This report presents the findings of the first 7(1/2) years of follow-up. Incidence of infection was high in the study population. However, incidence of bacillary disease was more frequent among initial tuberculin reactors, especially among the older persons, than among non-reactors of whom the majority were in the younger age groups. The distribution of new cases of bacillary tuberculosis among those not infected at intake did not show any evidence of a protective effect of the BCG vaccines.
This article was published in Bull World Health Organ and referenced in Journal of Antivirals & Antiretrovirals

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