The position of a person who believes that vaccines are generally armful for health and are associated (yet not limited) to the cause of autism in children.
Ignoring the whole body of well documented evidence that vaccines have effectively cured diseases like polio, smallpox and measles, anti-vaxers most common arguments are based on false correlation statistics, mainly seeded by dubious and discredited studies. They will argue that if celebrities like Jenny McCarth, Michele Bachmann and
Charlie Sheen agrees with them, then who cares about a scientists
opinion?
Anti-vaxers will generally accuse the opposition of partaking in a global "big pharma" conspiracy, if ever they dare to disagree with them.
Such movement poses a real threat for the children. They are
particularly vulnerable because of the time they pass in schools classrooms, playing field or any other social gatherings, which can greatly increase the spread of infectious diseases even if a majority of children are
vaccinated.