CSA adhesion-blocking antibodies correlate with hemoglobin levels at delivery but not with other delivery outcomes in women with a submicroscopic infection. Graphs represent linear regression analysis of the association of inhibitory antibodies and birth weight (A), gestational age at delivery (B), Z-scores of SGA (C), and maternal hemoglobin levels at delivery (D). Horizontal dotted lines indicate thresholds for low birth weight (2,500 g), preterm birth (37 weeks), SGA (10th percentile), and anemia (11 g/dl). The P value was determined by linear regression.