No person shall be liable for any injury caused by an act or omission in the administration of a vaccine or other immunizing agent to a minor, including the residual effects of the vaccine or immunizing agent, if the immunization is either required by state law, or given as part of an outreach program pursuant to Sections 120400 through 120415, inclusive, and the act or omission does not constitute willful misconduct or gross negligence.
Source:
Section 120455, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=120455..