Two epidemics of tuberculosis in children under three years of age vaccinated with oral BCG, in the year of 1967 and 1969, in a day-nursery in S. Paulo borough, are here described. In 1967 there were 96 children in the place, at first non-reactors, to the standard tuberculine test (PPD, RT-23, 2UT). There were found 19 reactors, being 12 strong reactors (63,2%) and 7 weak reactors (36,8%), and in 15 children or 78,9% of the reactors, the chest X-Rays showed […]