The study is open to immunocompromised people age 18 and older who have received or plan to receive the COVID-19 vaccine. Immunocompromised conditions include:
Organ transplants.
Blood cancers.
Other cancer or any form of therapy over the past 12 months.
HIV.
Autoimmune, chronic inflammatory conditions, or other conditions that required some form of therapy over the past 12 months.
Congenital immunodeficiencies.
If you are not immunocompromised or if you have been previously infected with COVID-19, you are not eligible for the study.