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| The Angolan military administers yellow fever vaccines at a market in Luanda, the capital city. |
The world is in danger of running out of vaccines for a deadly disease: yellow fever. A major outbreak in the African nation of Angola has already depleted the stockpile that world health officials had set aside for emergencies. It's unclear whether new vaccines can be made in time — even as officials worry that the epidemic could spread through Asia and beyond.
