When It Comes To Vaccines, Science Can Run Into A Brick Wall

This was depressing to read:

Unfortunately, giving people corrected information also made them less likely to say they would vaccinate a future child with MMR vaccine. And that effect was concentrated among those parents with the least favorable vaccine attitudes.[NPR]

Why is this?  Melanie Zurik on Huffington Post describes why:

When people are confronted with new information that contradicts a current belief it damages their sense of identity and causes them to fight back against it, essentially digging in their heels even if they accept the information as true.