Maternal CD4-cell count was associated with infant infection at first infant HIV test: among 16 women with a CD4-cell count>350 cells/μl and known infant infection status, two had HIV-infected infants, while both infants from the two mothers with a CD4-cell count ≤350 cells/μl were HIV-infected (Fisher's Exact test, p=0.006). This evidence concerns the gene CD4 and infection.