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Updated boosters add limited protection against Covid-19 illness, first real-world study shows | CNN
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Effectiveness of a bivalent mRNA vaccine booster dose to prevent severe COVID-19 outcomes: a retrospective cohort study - The Lancet Infectious Diseases
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Eric Topol on X: "The BA.5 bivalent booster's effectiveness: by April 2023, "individuals previously vaccinated only with wild-type vaccines had little protection against Covid-19 hospital admission" restored by the booster (24K cases,
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