Summary:
This study is evaluating if additional doses of the original COVID-19 vaccines or experimental versions targeting specific COVID-19 variants are safe and how they may affect the immune system. Participants will receive a single vaccination, have 9 in-person visits, and their total participation will last around 12 months. Participants will be compensated for their time and expenses related to their study participation.
Criteria:- Fully vaccinated and boosted with a FDA-authorized or approved COVID-19 vaccine
- Live in the DC, MD, or VA area
- Are 18 years of age or older
- Are in good general health
Qualified Participants May Receive:
Participants will receive a single dose, alone or in combination, of an original COVID-19 vaccine or an experimental COVID-19 variant specific version.