Document Classification

Section Type: RESULTS

Text: Significantly higher concentrations of pertussis antibodies were measured at delivery in women who received Tdap during pregnancy vs postpartum (eg, pertussis toxin antibodies : 51. 0 EU/mL [95 % CI, 37. 1-70. 1] and 9. 1 EU/mL [95 % CI, 4. 6-17. 8], respectively ; P <. 001) and in their infants at birth (68. 8 EU/mL [95 % CI, 52. 1-90. 8] and 14. 0 EU/mL [95 % CI, 7. 3-26. 9], respectively ; P <. 001) and at age 2 months (20. 6 EU/mL [95 % CI, 14. 4-29. 6] and 5. 3 EU/mL [95 % CI, 3. 0-9. 4], respectively ; P <. 001).