Researchers are calling for newer, better options for COVID vaccines

Two years later, did Covid vaccines live up to their promise? Despite the success of mRNA vaccines, researchers think a new generation of Covid vaccines could provide broader, longer-term protection in the future. NBC News

...In particular, researchers think sprays or drops given through the nose or mouth could do a better job of stopping transmission. They also hope that vaccines that target multiple parts of the virus or several variants at once could reduce the need for continuous boosters.

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