Why It’s So Hard To Wipe Out Polio In Pakistan

A Pakistani health worker administers the oral polio vaccine to a child during a campaign in Karachi on May 7. Because of past attacks on vaccinators, security personnel are often assigned to accompany them.

A report from the front lines. Obstacles range from violence aimed at vaccinators to social media campaigns against vaccines. Not to mention classism.

(Image credit: Rizwan Tabassum/AFP/Getty Images)

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