Scientists have found clues that the world’s leading COVID-19 vaccines offer lasting protection that could diminish the need for frequent booster shots, but they caution that more research is needed and that virus mutations are still a wild card.
Scientists have found clues that the world’s leading COVID-19 vaccines offer lasting protection that could diminish the need for frequent booster shots, but they caution that more research is needed and that virus mutations are still a wild card.
