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- Natural immunity superior to vaccines against delta variant, CDC study finds WFLA
- 3 major studies reveal new information about effectiveness of vaccine and boosters l GMA Good Morning America
- Prior infection, vaccines provide best protection from COVID: study Japan Today
- COVID vaccine: Booster shots needed against omicron, CDC studies show WABC-TV
- Health officials say booster shots reduce risk of hospitalization 12NewsNow
- View Full Coverage on Google News
Natural immunity superior to vaccines against delta variant, CDC study finds - WFLA
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