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COVID-19 practice questions and answers

why an applicant does not complete a COVID-19 vaccine series:

Applicant may request a waiver based on religious or moral convictions. If an applicant objects to vaccination based on religious or moral convictions, it must be documented that the applicant is requesting an individual waiver based on religious or moral convictions. This is not a blanket waiver, and the applicant will have to submit a waiver request to US Citizenship and Immigration Services (USCIS). USCIS will determine if this type of waiver is granted, not the civil surgeon or CDC. Applicant refuses a COVID-19 vaccine series in part or entirety If an applicant refuses one or more doses of a COVID-19 vaccine series that is medically appropriate for the applicant, it should be documented that the vaccine requirements are not complete and that the applicant refuses vaccination. This applicant is Class A and is inadmissible to the United States.


Signs and symptoms of coronavirus disease 2019 (COVID-19) may appear two to 14 days after exposure. This time after exposure and before having symptoms is called the incubation period. You can still spread COVID-19 before you have symptoms, called presymptomatic. Common signs and symptoms can include:




Early symptoms of COVID-19 may include a loss of taste or smell.

Other symptoms can include:

Shortness of breath or difficulty breathing

Muscle aches


Sore throat

Runny nose


Chest pain

Pink eye (conjunctivitis)