Yay. Attempting to clear up parents' misconceptions about the (bogus, nonexistent, false) vaccination-autism link makes them less
likely to vaccinate their kids. Not more
I suspect this is a specific instance of the more general problem that attempting to correct misinformation can reinforce the incorrect beliefs, rather than dispel them. See http://www.boston.com/bostonglobe/ideas/articles/2010/07/11/how_facts_backfire/
for more on that depressing fact.
In any case, parents who can hear "_This_ is what's best for your child" -- backed up by solid, indisputable facts, unlike most parenting advice -- and then do the opposite, likely have problems far beyond anything vaccinations can cure. When they invent a vaccine against stupidity, we'll be in good shape. Until then, measles for all.
Vaccination story via +Slashdot