The dismantling of U.S.A.I.D. has disrupted the global supply chain that provides a therapeutic food, leaving thousands of malnourished children at risk of dying.

Kaltum Mohammad with her daughter, Fatima, in the Gubio internally displaced persons camp in Maiduguri, Nigeria, in November.Credit...

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By Apoorva Mandavilli

Photographs by Taiwo Aina