NIH begins clinical trial evaluating second COVID-19 booster shots in adults

A Phase 2 clinical trial evaluating various additional COVID-19 booster shots has begun enrolling adult participants in the United States. The trial aims to understand if different vaccine regimens - prototype and variant vaccines alone and in combinations - can broaden immune responses in adults who already have received a primary vaccination series and a first booster shot.

from Breaking World Pharma News https://ift.tt/DhibxvS