I did crack some jokes, for example this and this. I don’t believe she doesn’t believe that vaccinations work, but I it is clear she was willing to use the language of the anti-vaxx crowd to pander to them (and given her profession should have made anti-anti-vaxx statements before she was called on her views).
I don’t know to what extent repeating the statements of anti-vaxxers makes you one; if someone says “Evolution is only a theory” then later says “I believe some form of evolution is probably true” then you don’t get a free ride. It is weaselly, like Trump’s quasiretraction of his birtherism. I don’t think Trump ever really believed Obama was born in Kenya either.