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A proposal to require more children to be vaccinated before entering school in California was revamped Tuesday to address concerns that it might bar many young people from a public education. But key members of the Senate Education Committee, which is scheduled to vote on the measure Wednesday, remained noncommittal about it. (McGreevy, 4/21)

A bill that would eliminate the option California parents use to skip their child’s school immunizations faces a do-or-die test Wednesday in a state Senate committee that came close to rejecting it last week. (Gutierrez, 4/21)

On the heels of a measles outbreak in California fueled by vaccination fears that scientists call unfounded, another large study has shown no link between the measles-mumps-rubella vaccine and autism. The study examined insurance claims for 96,000 U.S. children born between 2001 and 2007, and found that those who received MMR vaccine didn’t develop autism at a higher rate than unvaccinated children, according to results published Tuesday by the Journal of the American Medical Association, or JAMA. Even children who had older siblings with autism—a group considered at high risk for the disorder—didn’t have increased odds of developing autism after receiving the vaccine, compared with unvaccinated children with autistic older siblings. (Whalen, 4/21)