Close Alert Banner
Skip to Content

Hospital

ResearchFoundation

Text Resize

Regular Large X-Large

Colour Contrast

Default High

Accessible formats and communication supports are available, please contact accessibility@cheo.on.ca

View Our Accessibility Plan

CareersContact UsWebsite FeedbackMyChart
FR
Childrens Hospital of Eastern Ontario Logo
Contact Us
  • Coming to CHEO
    • Accessibility
    • Amenities
    • CHEO KidCare Pharmacy
    • Health Records
    • Maps and locations
    • Parking
    • Patient safety
    • Pay your bill
    • Preparing for your stay or visit
    • Research Connection
    • Visiting hours and policies
    View our Physician directory page
    Find Your Doctor Directory
  • Clinics, Services & Programs
    • A-Z Directory
    • Core Innovation
    • Emergency care
    • IR/Cath and Sim Labs
    • Make a referral
    • Mental health
    • School
    • Surgical care
    • Virtual care
  • Resources and Support
    • A-Z resources
    • Community supports
    • Families First newsletter
    • Family and caregiver supports
    • Indigeneity - Inclusion, Diversity, Equity, Accessibility, Social justice
    • Patient Experience
    • Transition to adult care
  • Get Involved
    • Co-op program
    • Donate
    • Family Advisory Council
    • Feedback
    • Share your voice
    • Volunteer
    • YouthNet
  • About Us
    • About CHEO
    • Careers at CHEO
    • CHEO leadership
    • For community physicians
    • For learners, students and residents
    • For pharmacists
    • Newsroom
    • Our partners
    • Privacy and confidentiality

Study finds COVID vaccination during pregnancy doesn't increase complications around childbirth

Boy looking at camera

Regular Large X-Large
 
  • Open new window to share this page via Facebook Facebook
  • Open new window to share this page via LinkedIn LinkedIn
  • Open new window to share this page via Twitter Twitter
  • Email this page Email
Email iconSubscribe to News

Contact us

Main switchboard
401 Smyth Road
Ottawa ON K1H 8L1
P 613-737-7600
Email

Receive Email Updates...
Posted on Thursday, March 24, 2022
Email icon Back to Search

OTTAWA, Canada – March 24, 2022 –  Researchers have found that receiving a COVID-19 vaccine during pregnancy does not lead to increases in the frequency of complications around the time of childbirth. The findings, which are published in JAMA, provide further assurances about the safety of mRNA vaccines for this particularly unique population.

Lead author Dr. Deshayne Fell led the study of nearly 100,000 pregnancies by analyzing data from BORN Ontario (Ontario’s provincial birth registry), which is linked to the province’s COVID-19 immunization database.

While analyzing childbirths between December 2020 and September 2021, Dr. Fell found:

  • Approximately 23 percent (over 22,000 individuals) received at least one dose of a COVID-19 vaccine during pregnancy.
  • No increase in the babies’ need for neonatal intensive care unit (NICU) admission.
  • No frequency of low Apgar scores (an assessment at birth that can identify babies who may need special care, such as extra help with their breathing) in babies born to vaccinated mothers, compared to babies born to unvaccinated mothers.
  • Vaccination was not associated with increased risk of:
    • heavy bleeding after childbirth;
    • infection in the uterus or membrane;
    • emergency caesarean section among the vaccinated mothers, compared to unvaccinated mothers.

“There is increasing evidence from studies around the world showing that COVID-19 vaccination during pregnancy is not associated with poor pregnancy or birth outcomes, and showing that COVID-19 vaccines are effective at preventing COVID-19 in pregnant mothers and also in their babies in the first few months of life.” says Dr. Fell, an Associate Professor in the University of Ottawa’s Faculty of Medicine and a Scientist at the CHEO Research Institute.

Vaccination against COVID-19 is recommended for pregnant individuals since they are at a higher risk of complications from the disease, including hospitalization, ICU admission and death, compared with nonpregnant individuals. COVID-19 during pregnancy has also been linked with increased risks of pregnancy complications such as preterm birth of the babies.

Reference: Deshayne B. Fell, PhD; Tavleen Dhinsa, MSc; Gillian D. Alton, PhD; et al. Association of COVID-19 Vaccination in Pregnancy With Adverse Peripartum Outcomes. JAMA. Published online March 24, 2022. doi:10.1001/jama.2022.4255

-30-

Media contact

Jennifer Ruff
Manager of Communications
CHEO Research Institute
(613) 261-3979
jruff@cheo.on.ca

About the CHEO Research Institute

The CHEO Research Institute coordinates the research activities of CHEO and is affiliated with the University of Ottawa. The seven programs of research at CHEO RI focus on a full spectrum of pediatric topics. Key themes include cancer, diabetes, obesity, mental health, emergency medicine, musculoskeletal health, electronic health information and privacy, and genetics of rare disease. At the CHEO Research Institute, discoveries inspire the best life for every child and youth. For more information, visit cheoresearch.ca.

CHEO

  • Coming to CHEO
  • Clinics, Services & Programs
  • Resources and Support
  • Get Involved
  • About Us

Contact Us

CHEO
401 Smyth Road
Ottawa ON K1H 8L1
Phone: 613-737-7600
Email Us

 

Connect with us

View our Facebook Page View our Instagram Page View our YouTube Page View our LinkedIn Page

Sign up for our newsletter

twitter:00000000-0000-0000-0000-000000000000

Children's Hospital of Eastern Ontario logo

Copyright 2025 CHEO.

By GHD Digital
  • Sitemap
  • Accessibility
  • Disclaimer
  • Privacy and confidentiality
  • Website Feedback
  • Contact Us

Staff Portal

Close Old Browser Notification
Browser Compatibility Notification
It appears you are trying to access this site using an outdated browser. As a result, parts of the site may not function properly for you. We recommend updating your browser to its most recent version at your earliest convenience.