CD4 and infection: We observed a negative correlation between fetal weight and the proportion of CD3+ lymphocytes (r = −0.33, p = 0.05) and CD4+ lymphocytes (r = −0.33, p = 0.037); however, we did not find any relationship between the different cell subpopulations and gestational age at the time of delivery, maternal age, type of delivery, form of delivery onset, or the trimester of infection.