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COVID-19 vaccines hold strong against Delta, protection waning in older adults

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By Julie Steenhuysen

CHICAGO, Sept 10 (Reuters) - Three U.S. studies suggest COVID-19 vaccines offer strong protection against hospitalization and death, even in the face of the highly transmissible Delta variant, but vaccine protection appears to be waning among older populations, especially among those 75 and older.

U.S. data on hospitalization from nine states during the period when the Delta variant was dominant also suggests that the Moderna Inc vaccine was more effective at preventing hospitalizations among individuals of all ages than vaccines from BioNTech/Pfizer Inc or Johnson & Johnson .

In that study of more than 32,000 visits to urgent care centers, emergency rooms and hospitals, Moderna's vaccine was 95% effective at preventing hospitalization compared with 80% for Pfizer and 60% for J&J.

Overall, the findings, released on Friday in the U.S. Centers for Disease Control and Prevention's weekly report on death and disease show that vaccines continue to offer strong protection from COVID-19. (Reporting by Julie Steenhuysen; Editing by Aurora Ellis)