This is a prospective observational study of a cohort of individuals aged 30-50 years and a cohort of individuals aged 70 years and over receiving the COVID-19 vaccine.
Participants will complete a questionnaire to determine eligibility. Eligible participants will complete and sign an e-consent and then be provided with a participant ID, log in information and password to the database portal, and then be enrolled into the study.
Participants will complete the study assessments (baseline questionnaire, post vaccine symptom e-diary monthly, check-in questionnaire and dried blood spot specimens)
