What CDC Documents and Science Reveal by Dr. Sherri Tenpenny The Center for Disease Control is an ardent promoter of vaccines. Yet, from its own research documents, we learn that vaccines are neither safe nor effective. The information contained in this DVD could spare adults from further vaccine-induced injuries and spare innocent children from a lifetime of mental, physical, and immunological limitations. This is a must-see for those who desire scientific backing for choosing not to vaccinate. 2-hour DVD.