Among the fifteen pregnant women with HCMV primary infection at the late time point, we observed that three (20%) had the HCMV-specific CD4+ T-cell response against one peptide pool, four (26%) against two peptide pools and 1 (7%) against three and four peptide pools, while six (40%) showed no HCMV-specific CD4+ T-cell response (Figure 2A). Here, CD4 is linked to infection.