Consistency of Mycobacterium tuberculosis-Specific Interferon-Gamma Responses in HIV-1-Infected Women during Pregnancy and Postpartum

Figure 1

Change in magnitude of postpartum interferon-γ response by baseline interferon-γ response. The dash and dotted line represents women with baseline interferon-γ response of >8 SFCs/well, and the solid line represents women with baseline interferon-γ response of ≤8 SFCs/well. The horizontal dashed line corresponds to the manufacturer defined cut-point at 6 SFCs/well above background for a positive response and the dotted horizontal line represents 8 SFCs/well. Interferon-γ response is defined as the maximum of ESAT-6/CFP-10 minus spot count in negative control.