We wish to thank our Study participants for their incredible gift to us. They are allowing us access to their lives so we can advance our understanding of how the immune system develops. The exciting results to date would not have been possible without their generosity.
—Dr. Malcolm Sears, CHILD Cohort Study Founding Director
Our families want to help advance science and medical research—to know that their particpation has led to a health discovery or a new medication or treatment that will help all kids live healthier lives. For CHILD families, it’s the idea of ‘putting a brick in the wall’ to help others in the future.
—Dr. Diana Lefebvre, former CHILD Research Manager

CHILD kids:
Your 12/13-year visit is important to us!
National CHILD poster & arts contests
- Manitoba: Nolin's CHILD visits in 2015 (age 4) and 2022 (age 12)
Vancouver: a successful clinical visit with Site Coordinator Conrado, Research Assistant Alex, CHILD participant Max and Research Assistant Claudia
- Vancouver: Site Coordinator Conrado Guzman with Max and Max's dad
- Edmonton: Site Coordinator Joyce Chikuma measures Lucas' waist
- Edmonton: Site Coordinator Joyce Chikuma assists Jaimen with his spirometry test
- Edmonton: Research Assistant Fabiana conducts a skin prick test on Lila
- Edmonton: Research Assistant Fabiana with Ethan and Kitty
- Edmonton: Research Assistant Fabiana with Study participant Brendan
- Manitoba: Nicholas at his 12-year visit
- Manitoba: Juno prepares to take a spirometry test
- Manitoba: Owen posing in his new CHILD swag and Acc/GPS device
- Manitoba: Nicholas's CHILD visits in 2014 (age 3) and 2023 (age 12)
- Manitoba: A brave Study participant smiles after giving a blood sample
- Manitoba: Nolin’s CHILD visits in 2015 (age 4) and 2022 (age 12)
Vancouver: a successful clinical visit with Site Coordinator Conrado, Research Assistant Alex, CHILD participant Max and Research Assistant Claudia
- Vancouver: Site Coordinator Conrado Guzman with Max and Max’s dad
- Edmonton: Site Coordinator Joyce Chikuma measures Lucas’ waist
- Edmonton: Site Coordinator Joyce Chikuma assists Jaimen with his spirometry test
- Edmonton: Research Assistant Fabiana conducts a skin prick test on Lila
- Edmonton: Research Assistant Fabiana with Ethan and Kitty
- Edmonton: Research Assistant Fabiana with Study participant Brendan
- Manitoba: Nicholas at his 12-year visit
- Manitoba: Juno prepares to take a spirometry test
- Manitoba: Owen posing in his new CHILD swag and Acc/GPS device
- Manitoba: Nicholas’s CHILD visits in 2014 (age 3) and 2023 (age 12)
- Manitoba: A brave Study participant smiles after giving a blood sample
Uncommon dedication
93% of the original CHILD cohort is still taking part 12 years on—an uncommonly high figure for a cohort trial.
The dedication of participating families is vital to a longitudinal study like CHILD. Families are asked to stay involved for years, participating in interviews, undergoing physical examinations and clinical testing, and completing questionnaires—since the Study began, the parents of each family have filled out over 400 questionnaires, some 10 or more pages in length.
Some families have moved overseas yet they continue to complete their questionnaires and to come in for clinic visits when they are back in the country.


CHILD Cohort Study families are true superheroes
Movie nights!
In 2019 and 2020, Study families gathered to view a feature documentary film containing CHILD research
The film “Let Them Eat Dirt” highlights ground-breaking CHILD research findings about the microbiome. Families participating in the the CHILD Cohort Study were invited to special celebratory screenings of the film.
More about: Edmonton movie night; Vancouver movie night
Getting ready for the 8/9-year clinical visit
In 2019, Study children were old enough to help inform and promote the Study themselves
Two sets of young CHILD Cohort Study participants—Sam and Hazel in Vancouver, and Sara, Colby and JD in Edmonton—helped create short videos to prepare their peers for their CHILD clinical visits at age 8/9 years.
Celebrating 5 years of commitment
In 2017, the children participating in the CHILD Cohort Study all completed their five-year clinical visits as part of their ongoing involvement in the Study.
Subsequently, staff and researchers at the four sites of the CHILD Cohort Study invited participating families to gatherings to celebrate this milestone achievement, to thank them for their invaluable dedication, to share some of the Study’s significant findings to date, and to discuss plans for the Study going forward.
Aimée Dubeau, former Research Coordinator of CHILD’s Toronto site, discusses the Study’s five-year milestone.
Click on the images below for details about each celebration, including photos.