A pediatrician in Northridge, CA gives the measles-mumps-rubella vaccine to 1-year-old Cameron Fierro last month.
A pediatrician in Northridge, CA gives the measles-mumps-rubella vaccine to 1-year-old Cameron Fierro last month. Damian Dovarganes AP
A pediatrician in Northridge, CA gives the measles-mumps-rubella vaccine to 1-year-old Cameron Fierro last month. Damian Dovarganes AP