CD4 and AIDS: Of the total number of cases of HIV-infected pregnant women reported in the “Nascer no Brasil” study (n = 74), 89.3% were identified in one health information system: 73.1% in the SICLOM, 60.4% in the SISCEL Viral Load, 59.3% in the SISCEL CD4, 57.1% in the SINAN HIV Pregnant Women, 42.6% in the SINAN AIDS, and 3.7% in the SIM (Table 1, Figure 1).