Figure 1From: Latent and subclinical tuberculosis in HIV infected patients: a cross-sectional study Flow diagram of patients tested with the immunospot test and subsequent diagnosis and treatment of LTBI. TB, tuberculosis; LTBI, latent tuberculosis infection; Drug regimens are abbreviated to the letters for the drugs administered: H, isoniazid; R, rifampicin; Z, pyrazinamide.Back to article page