Dozens of parents filled the New Jersey State House Monday to defend their right to refuse vaccinations for their children.

Right now, parents can opt out of school-mandated vaccinations for religious or medical reasons. However, legislation approved by the committee would make it harder to get those exemptions by requiring a notarized document explaining the religious conflict or a doctor's note in the case of a medical exemption.

The parents who attended the Assembly hearing say they should have the right to choose what vaccinations are given to their children.

Doctors have testified that avoiding vaccinations can put children at risk of contracting diseases that would otherwise be preventable. Vaccinations for 14 diseases are recommended for kids under 2 years old.