Your Sunday deep dive ^[1]:

“The widespread prevalence and persistence of misinformation in contemporary societies, such as the false belief that there is a link between childhood vaccinations and autism, is a matter of public concern. For example, the myths surrounding vaccinations, which prompted some parents to withhold immunization from their children, have led to a marked increase in vaccine-preventable disease, as well as unnecessary public expenditure on research and public-information campaigns aimed at rectifying the situation”

Never underestimate those who have a vested interest in hiding the Truth from the public . . .

Source:
Misinformation and Its Correction, Continued Influence and Successful Debiasing ^[1]
Stephan Lewandowsky, Ullrich K. H. Ecker, Colleen M. Seifert, Norbert Schwarz and John Cook  
http://psi.sagepub.com/content/13/3/106.full