Vaccination Against COVID-19 in Pregnant and Lactating Women in Belgium

Inclusion Criteria: * Female population older than 18 years. * Ability to provide informed consent. * Willing to be vaccinated with a COVID-19 vaccine. * Intend to be available for follow-up visits through one year postvaccination. * Influenza and pertussis vaccination during pregnancy (as per Belgian recommendations) is allowed. Exclusion Criteria: * Serious underlying immunological condition (e.g. immunosuppressive disease or therapy, human immunodeficiency virus (HIV) infection…). * Systemic treatment with immune suppressive medication, including chronic steroid use of \> 10 mg prednisone or equivalent. * Anything in the opinion of the investigator that would prevent volunteers from completing the study or put the volunteer at risk.