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The Conversation
The Conversation
Katrine L. Wallace, Assistant Professor of Epidemiology and Biostatistics, University of Illinois Chicago

Why do people still get polio in some countries and not in others?

In Pakistan, where wild polio still has not been eliminated, health workers go door to door vaccinating young children. ARIF ALI/AFP via Getty Images

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected].


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