Story highlights California House passes measure 46-30

Proposal now returns to Senate, which must approve amendments to send it to governor

Measles outbreak linked to Disneyland is cited as stimulus to legislation

(CNN) The California House passed a proposal that would outlaw a family's personal and religious beliefs as reasons to exempt their children from school vaccinations.

The controversial proposal now returns to the Senate, which must approve amendments for so-called SB277 to advance to Gov. Jerry Brown for his signature. The Senate passed the initial bill in May.

The measure, arising partly from concerns over this year's measles outbreak linked to Disneyland, would allow medical exemptions deemed appropriate by the State Department of Public Health, according to a legislative summary.

Opponents include Californians for Vaccine Choice, whose website asserts the law "would eliminate a parent's right to exempt their children from one, some, or all vaccines, a risk-laden medical procedure."

"If SB 277 is approved by the Assembly and Governor Brown signs it, California parents will be forced to give their children more than 40 doses of 10 federally recommended vaccines or homeschool unless they can find a doctor to write a medical exemption that doctors deny to 99.99 percent of children under federal guidelines," the group said.