The University of California San Diego has joined a Phase II clinical trial to evaluate various additional COVID-19 booster shots. The trial seeks to understand if different vaccine regimens can broaden immune responses in adults who already have received a primary vaccination series and a first booster shot.
Fully vaccinated and boosted San Diego County residents are among those nationwide who will be able to participate in a new clinical trial that seeks to test combinations of COVID-19 vaccines that target variants, including Beta, Delta and Omicron.