Clinical Trial 49221

Washington, DC 20037


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.   

  • 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.

Clinical trials are medical research studies designed to test the safety and/or effectiveness of new investigational drugs, devices, or treatments in humans. These studies are conducted worldwide for a range of conditions and illnesses. Learn more about clinical research and participating in a study at About Clinical Trials.