Inclusion Criteria:  Women/Individuals ≥ 16 years of age who are ≥7 0/7 weeks' gestation on the day of enrollment Capacity to provide informed consent and to comprehend and comply with the study requirements Planning to deliver at a participating site hospital Planning to receive or have previously received one-dose of a Health Canada approved COVID-19 vaccine (any product, any number of doses) during the current pregnancy  Exclusion Criteria:  Cases with known major fetal concerns Women/Individuals who are fully vaccinated against COVID-19 Women/Individuals who are pregnant due to surrogacy, or planning to give their child up for adoption Women/Individuals with a non-viable pregnancy (e.g., ectopic)