Diseases that were recently considered eradicated (measles, chickenpox, polio, whooping cough, mumps) are now reemerging as more families are choosing not to immunize their children.  PBS’s NOVA is airing a documentary  “Vaccines-Calling the Shots” on September 10th at 9 P.M.  Information from researchers, parents, and the tracking of worldwide epidemics will be presented.