<qa>  What is the sensitivity of the tests conducted in the pediatric age group?Despite the important results obtained with the test QTF-GIT in adults, studies of specificity and sensitivity of the tests conducted in the pediatric age group are still limited. Some studies have shown a high specificity, while the sensitivity appears lower than the TST. The data are discordant, however, between the different studies, complicated by the fact that there is no real-Gold standard for the diagnosis of latent TB, and hence, further analysis is still needed. 