[Study on BCG vaccination and incidence of children's tuberculous meningitis in Liaoning province].

The purpose of this study was to assess the effect of BCG vaccination on the incidence of tuberculous meningitis in children. A retrospective review was undertaken to find out vaccination rate of BCG and positive conversion mantoux rate in newborn infants. The results obtained were as follow: in 1980, vaccination rate was 51.61%, and the positive conversion Mantoux rate was 87.86%; in 1988 vaccination rate was 96.06%, and the positive conversion Mantoux rate was 94.92%. With the increase vaccination rate of BCG the incidence of tuberculous meningitis in children have decreased: in 1980 it was 3.27/100000; in 1988 it was 0.95/100000. The annual average incidence rate decreased by 14.28%.