An excellent case study of the unsubstantiated fears regarding vaccines is the 1999 concerns by some doctors over the microscopic amount of mercury in vaccines for children. Their resulting decisions put numerous children at risk. Leading vaccine specialist and researcher and the director at a Vaccine Center at Philadelphia.

In his recent book, Offit concisely presents how unproven anxieties and unfamiliarity over seemingly dangerous substances can lead to deadly consequences: “Preservatives were first added to multi-dose vials of vaccines back in the 1930’s. The reason was that as the needle penetrated the rubber stopper, again and again, bacteria could enter the vial. In the early 1900’s, children receiving the eighth, ninth, or tenth dose of vaccine might be inoculated with bacteria that had inadvertently been introduced into the vial, causing severe and occasionally fatal…