Active Screening of Latent Tuberculosis Infection in School Contacts of Active Tuberculosis Patients

Inclusion Criteria

• •13 years old or above;
• •Students in junior middle school, high school and university;
• •Close contact of school active tuberculosis case (e.g. in the same classroom, in the same dormitory);
• •Himself/herself (together with his/her guardian for age under 18 years old) willing to participate in trial and sign informed consent.