Pediatrician Charles Goodman holds a dose of the measles-mumps-rubella, or MMR, vaccine at his practice in Northridge, Calif, Jan. 29, 2015
Pediatrician Charles Goodman holds a dose of the measles-mumps-rubella, or MMR, vaccine at his practice in Northridge, Calif, Jan. 29, 2015 AP
Pediatrician Charles Goodman holds a dose of the measles-mumps-rubella, or MMR, vaccine at his practice in Northridge, Calif, Jan. 29, 2015 AP