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    How durable are the mRNA Covid vaccines?

    In October, the Centers for Disease Control and Prevention recommended that high-risk adults get...

    New Covid vaccines work against the BA.2.86 variant, companies say

    Moderna’s latest Covid booster appears to work against the BA.2.86 omicron subvariant, the drugmaker...

    In the ICU, doctors see rise in Covid cases but less severe disease

    For more than three years, Dr. Christopher Ohl has been treating Covid patients in...