The link between autism and the MMR vaccine has been pretty comprehensively discredited. I realise that it is hard to imagine that a study published by the Lancet would turn out to be such complete crap but there you go.
In politics however the empirical reality is that facts matter much less than public perception, and seeing as the anti MMR lobby is organised and motivated whereas the supporters of MMR are generally apolitical this means that all three of the remaining candidates for US president are willing to pander to the scaremongers.
The scientific evidence here is pretty clear yet the controversy has caused levels of vaccination to fall off and by not challenging the supposed MMR autism link all the candidates have demonstrated that they are willing to endanger the citizens whom they seek to serve and lead in order to get elected.
Where the political backlash against vaccination is even greater in some parts of world than in the West, it has enabled diseases that were on the cusp of being eliminated, like Polio, to make strong resurgences and it has left a lot of children severely disabled for life. For the three main aspirants to become the most powerful person on the planet to fuel this backlash for votes is disgusting.
Question Time’s Brexit Hero
8 minutes ago