Infants in the 2 dose group had a geometric mean concentration ( GMC ) of IgG PT of 16 ELISA units per mL ( EU/mL ) , 95 % CI : 11 to 25 , significantly higher than birth dose only ( 5 EU/mL , 95 % CI : 3-8 ) and controls ( 3 EU/mL , 95 % CI : 2-5 ) .
