How did the world run so low on cholera vaccine? As outbreaks grow, stockpile runs dry

"The demand is four times more than the supply," said Daniela Garone, the international medical coordinator for Doctors Without Borders.

"Even though we're still running into the headwind, some days we actually end up steps backwards, not steps forward," said Michael Osterholm, director of the Center for Infectious Disease Research and Policy at the University of Minnesota.

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