The Canadian National Advisory Committee on Immunization (NACI) now recommends vaccinating with Tdap in every pregnancy, between 27 and 32 weeks of gestation.
- Vaccination in pregnancy is safe for the baby and mom and is effective to prevent neonatal infection.
- Vaccination is recommended irrespective of previous immunization history or the interval between pregnancies due to rapid waning material antibody.
- Tdap immunization may be provided from 13 weeks up to the time of delivery based on unique patient considerations such as the risk of preterm birth.
- One adult dose of Tdap is publicly funded in Ontario.
Hospitalization for pertussis infection is greatest among babies less than 2 months of age. With increasing pertussis outbreaks in Canada. Routine maternal vaccination will provide better protection for infants. Tdap vaccination in pregnancy has been shown to protect 9 of 10 infants, less than 3 months of age, against pertussis.
Many countries have already incorporated Tdap vaccination in pregnancy as part of the routine adult immunization program. No increased risk of adverse pregnancy maternal or infants events has been reported in these countries. Similarly, no serious adverse events have been detected in Canada through CAEFIS (Canadian Adverse Events Following Immunization Surveillance).
Source:
An Advisory Committee Statement-National Advisory Committee on Immunization (NACI) Update on Immunization in Pregnancy with Tetanus Toxoid. Reduced Diphtheria Toxoid and Reduced Acellular Pertussis (Tdap) Vaccine. February 2018.
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