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Why do we get shots in the arm? It's all about the muscle

By Libby Richards, Associate Professor of Nursing, Purdue University
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Millions have rolled up their sleeves for the COVID-19 vaccine, but why haven’t they rolled up their pants legs instead? Why do we get most shots in our arms?

As an associate professor of nursing with a background in public health, and as a mother of two curious kids, I field this question fairly often. So here’s the science behind why we get most vaccines in our arm.

It’s worth noting that most,…


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