1. WHO. World Health Organization. Safety of immunization during pregnancy: a review of the evidence: global advisory committee on vaccine safety. Geneva Switzerland: World Health Organization; 2014. Available from: https://apps.who.int/iris/handle/10665/340577
2. PHAC. Public Health Agency of Canada. Canadian Immunization Guide. Part 3 - vaccination of specific populations: immunization in pregnancy and breastfeeding. Ottawa (ON) Canada 2020 [updated Aug 2018]; cited 2023 Feb 1]. Available from: https://www.canada.ca/en/public-health/services/publications/healthy-living/canadian-immunization-guide-part-3-vaccination-specific-populations/page-4-immunization-pregnancy-breastfeeding.html
3. NACI. Update on immunization in pregnancy with tetanus toxoid reduced diphtheria toxoid and reduced acellular pertussis (Tdap) Vaccine Canada: Public Health Agency of Canada (PHAC); 2018 [updated 2019-Oct-9; cited 2021 Mar]. Available from: https://www.canada.ca/en/public-health/services/publications/healthy-living/update-immunization-pregnancy-tdap-vaccine.html
4. NACI. National Advisory Committtee on Immunization. Recommendations on the use of COVID-19 vaccines. Canada: Public Health Agency of Canada (PHAC); 2021 [cited 2022 Jun 22]. Available from: https://www.canada.ca/en/public-health/services/immunization-vaccines/vaccination-pregnancy-covid-19.html
5. Severity of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Infection in Pregnancy in Ontario: A Matched Cohort Analysis