04 maio 2015

gov-info: CDC Gov Doc: The Journey of Your Child’s...



gov-info:

CDC Gov Doc: The Journey of Your Child’s Vaccine

Before  a new vaccine is ever given to people, extensive lab testing is done that can  take several years. Once testing in people begins, it can take several more  years before clinical studies are complete and the vaccine is licensed.

More Vaccine/Immunization Information:

Read Text Equivalent (for Section 508 access)

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