Vaccines save millions of lives every year, but recent outbreaks demonstrate the tenuous nature of this achievement. The Sabin Vaccine Institute (Sabin) is launching a research program to better understand the factors leading some to accept vaccination and others to delay or refuse it.

When Ebola virus disease swept through Guinea, Liberia and Sierra Leone in 2014, the world saw firsthand the shortcomings of the global response.

Global Communities had spent four years building access to safe sanitation in Liberia when the Ebola epidemic struck and revealed a surprising impact.

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