RSV vaccine 75% effective against hospitalization in older adults, CDC study estimates The respiratory syncytial virus (RSV) vaccine for older adults was 75% effective against hospitalization in its first season of use, adding to the findings of prelicensure trials, according to a test-negative, case-control analysis published today in JAMA. CIDRAP

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An estimated 60,000 to 160,000 RSV hospital admissions occur each year among US adults aged 65 years and older.

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