Usually, the BCG vaccine is given to children in nations with a high prevalence rate of TB but not for adults because efficacy varies.
The new vaccine was tested on patients who had the latent form of tuberculosis (TB)
Approximately 3,300 individuals participated in the study, with 1,626 of them getting two doses of the experimental vaccine, while others receiving placebo
The researchers reported last year that 10 of the vaccinated participants and 22 of the unvaccinated participants had developed the active form of tuberculosis (TB), which increased this year.