Can we learn more about what happens when lactating persons receive an mRNA-based COVID-19 vaccine?

Measuring Protein in Breast/Chest Milk

The objective of this research is to determine whether vaccine-derived protein from mRNA-based COVID-19 vaccination leads to detectable protein in breast/chest milk. We will use a method called SIMOA digital ELISA to detect these proteins in samples from days one through fourteen following vaccination. 

You will be asked to collect milk samples at multiple timepoints:

• Before you receive your next COVID vaccination
• Immediately after you receive your COVID vaccination
• For the next 2 weeks after your vaccination

 You are eligible if you are:

1. Currently lactating (breastfeeding/chest feeding/pumping)
2. Age ≥ 16 years
3. Planning to receive an mRNA-based COVID-19 vaccination while lactating
4. Willing to collect milk samples over a 3-week period

What are the short and long-term effects of COVID-19 vaccination in pregnancy?

Information related to COVID-19 vaccines is rapidly evolving. A lack of data on COVID-19 vaccines in pregnant women/individuals makes it challenging for Canadian families to make informed decisions about COVID-19 vaccination.

We are conducting a research study at participating hospitals located across Ontario to measure the short and long-term effects of COVID-19 vaccination in pregnancy.

You are eligible if:

1. You are currently pregnant AND
2. You plan to receive a COVID-19 vaccine dose in your current pregnancy AND
3. You plan to deliver at Kingston General Hospital.