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Officials are working on an emergency import deal for another vaccine that is not licensed in the U.S. Even then, a limited number of doses will be available at only a small number of clinics.
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An outbreak in Brazil isn't slowing down as predicted. Dr. Anthony Fauci calls it "a potential threat" to the U.S.
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An outbreak in Angola and the Democratic Republic of Congo has raised concerns about the infamous and fearsome disease — once a scourge of the U.S., Panama and Spain.