evidence: - I have received at least one dose of a US Food and Drug Administration (FDA) approved or authorized COVID-19 vaccine or a COVID-19 vaccine with World Health Organization Emergency Use Listing (WHO EUL). If not fully vaccinated, I will complete a recommended COVID-19 vaccine series within 90 days after arrival. If the COVID-19 vaccine I received cannot be determined or is not available in the United States, I will receive at least one dose of an FDA approved or authorized COVID-19 vaccine according to the guidelines: https://www.cdc.gov/vaccines/covid-19/clinical-considerations/interim-considerations-us.html - I have not received at least one dose of an US Food and Drug administration (FDA) approved or authorized COVID-19 vaccine or a COVID-19 vaccine with World Health Organization Emergency Use Listing (WHO EUL) but qualify for an exception to this requirement because I am too young.