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Lifelong Immunity? With Vaccines, It Depends

Vanessa Vohden, mom of 4-month-old Santiago, says she understands the importance of vaccines. She grew up in Peru where she saw kids in wheelchairs as a result of polio.
Vanessa Vohden, mom of 4-month-old Santiago, says she understands the importance of vaccines. She grew up in Peru where she saw kids in wheelchairs as a result of polio.

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